drivers/net/wireless/mac80211_hwsim.c

   1 /*
   2  * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
   5  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
   6  * Copyright (C) 2018 Intel Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 /*
  14  * TODO:
  15  * - Add TSF sync and fix IBSS beacon transmission by adding
  16  *   competition for "air time" at TBTT
  17  * - RX filtering based on filter configuration (data->rx_filter)
  18  */
  19
  20 #include <linux/list.h>
  21 #include <linux/slab.h>
  22 #include <linux/spinlock.h>
  23 #include <net/dst.h>
  24 #include <net/xfrm.h>
  25 #include <net/mac80211.h>
  26 #include <net/ieee80211_radiotap.h>
  27 #include <linux/if_arp.h>
  28 #include <linux/rtnetlink.h>
  29 #include <linux/etherdevice.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/debugfs.h>
  32 #include <linux/module.h>
  33 #include <linux/ktime.h>
  34 #include <net/genetlink.h>
  35 #include <net/net_namespace.h>
  36 #include <net/netns/generic.h>
  37 #include <linux/rhashtable.h>
  38 #include <linux/nospec.h>
  39 #include "mac80211_hwsim.h"
  40
  41 #define WARN_QUEUE 100
  42 #define MAX_QUEUE 200
  43
  44 MODULE_AUTHOR("Jouni Malinen");
  45 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
  46 MODULE_LICENSE("GPL");
  47
  48 static int radios = 2;
  49 module_param(radios, int, 0444);
  50 MODULE_PARM_DESC(radios, "Number of simulated radios");
  51
  52 static int channels = 1;
  53 module_param(channels, int, 0444);
  54 MODULE_PARM_DESC(channels, "Number of concurrent channels");
  55
  56 static bool paged_rx = false;
  57 module_param(paged_rx, bool, 0644);
  58 MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
  59
  60 static bool rctbl = false;
  61 module_param(rctbl, bool, 0444);
  62 MODULE_PARM_DESC(rctbl, "Handle rate control table");
  63
  64 static bool support_p2p_device = true;
  65 module_param(support_p2p_device, bool, 0444);
  66 MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
  67
  68 /**
  69  * enum hwsim_regtest - the type of regulatory tests we offer
  70  *
  71  * These are the different values you can use for the regtest
  72  * module parameter. This is useful to help test world roaming
  73  * and the driver regulatory_hint() call and combinations of these.
  74  * If you want to do specific alpha2 regulatory domain tests simply
  75  * use the userspace regulatory request as that will be respected as
  76  * well without the need of this module parameter. This is designed
  77  * only for testing the driver regulatory request, world roaming
  78  * and all possible combinations.
  79  *
  80  * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
  81  *      this is the default value.
  82  * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
  83  *      hint, only one driver regulatory hint will be sent as such the
  84  *      secondary radios are expected to follow.
  85  * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
  86  *      request with all radios reporting the same regulatory domain.
  87  * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
  88  *      different regulatory domains requests. Expected behaviour is for
  89  *      an intersection to occur but each device will still use their
  90  *      respective regulatory requested domains. Subsequent radios will
  91  *      use the resulting intersection.
  92  * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
  93  *      this by using a custom beacon-capable regulatory domain for the first
  94  *      radio. All other device world roam.
  95  * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
  96  *      domain requests. All radios will adhere to this custom world regulatory
  97  *      domain.
  98  * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
  99  *      domain requests. The first radio will adhere to the first custom world
 100  *      regulatory domain, the second one to the second custom world regulatory
 101  *      domain. All other devices will world roam.
 102  * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
 103  *      settings, only the first radio will send a regulatory domain request
 104  *      and use strict settings. The rest of the radios are expected to follow.
 105  * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
 106  *      settings. All radios will adhere to this.
 107  * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
 108  *      domain settings, combined with secondary driver regulatory domain
 109  *      settings. The first radio will get a strict regulatory domain setting
 110  *      using the first driver regulatory request and the second radio will use
 111  *      non-strict settings using the second driver regulatory request. All
 112  *      other devices should follow the intersection created between the
 113  *      first two.
 114  * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
 115  *      at least 6 radios for a complete test. We will test in this order:
 116  *      1 - driver custom world regulatory domain
 117  *      2 - second custom world regulatory domain
 118  *      3 - first driver regulatory domain request
 119  *      4 - second driver regulatory domain request
 120  *      5 - strict regulatory domain settings using the third driver regulatory
 121  *          domain request
 122  *      6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
 123  *                 regulatory requests.
 124  */
 125 enum hwsim_regtest {
 126         HWSIM_REGTEST_DISABLED = 0,
 127         HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
 128         HWSIM_REGTEST_DRIVER_REG_ALL = 2,
 129         HWSIM_REGTEST_DIFF_COUNTRY = 3,
 130         HWSIM_REGTEST_WORLD_ROAM = 4,
 131         HWSIM_REGTEST_CUSTOM_WORLD = 5,
 132         HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
 133         HWSIM_REGTEST_STRICT_FOLLOW = 7,
 134         HWSIM_REGTEST_STRICT_ALL = 8,
 135         HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
 136         HWSIM_REGTEST_ALL = 10,
 137 };
 138
 139 /* Set to one of the HWSIM_REGTEST_* values above */
 140 static int regtest = HWSIM_REGTEST_DISABLED;
 141 module_param(regtest, int, 0444);
 142 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
 143
 144 static const char *hwsim_alpha2s[] = {
 145         "FI",
 146         "AL",
 147         "US",
 148         "DE",
 149         "JP",
 150         "AL",
 151 };
 152
 153 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
 154         .n_reg_rules = 4,
 155         .alpha2 =  "99",
 156         .reg_rules = {
 157                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 158                 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
 159                 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
 160                 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
 161         }
 162 };
 163
 164 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
 165         .n_reg_rules = 2,
 166         .alpha2 =  "99",
 167         .reg_rules = {
 168                 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
 169                 REG_RULE(5725-10, 5850+10, 40, 0, 30,
 170                          NL80211_RRF_NO_IR),
 171         }
 172 };
 173
 174 static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
 175         &hwsim_world_regdom_custom_01,
 176         &hwsim_world_regdom_custom_02,
 177 };
 178
 179 struct hwsim_vif_priv {
 180         u32 magic;
 181         u8 bssid[ETH_ALEN];
 182         bool assoc;
 183         bool bcn_en;
 184         u16 aid;
 185 };
 186
 187 #define HWSIM_VIF_MAGIC 0x69537748
 188
 189 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
 190 {
 191         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 192         WARN(vp->magic != HWSIM_VIF_MAGIC,
 193              "Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
 194              vif, vp->magic, vif->addr, vif->type, vif->p2p);
 195 }
 196
 197 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
 198 {
 199         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 200         vp->magic = HWSIM_VIF_MAGIC;
 201 }
 202
 203 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
 204 {
 205         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 206         vp->magic = 0;
 207 }
 208
 209 struct hwsim_sta_priv {
 210         u32 magic;
 211 };
 212
 213 #define HWSIM_STA_MAGIC 0x6d537749
 214
 215 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
 216 {
 217         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 218         WARN_ON(sp->magic != HWSIM_STA_MAGIC);
 219 }
 220
 221 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
 222 {
 223         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 224         sp->magic = HWSIM_STA_MAGIC;
 225 }
 226
 227 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
 228 {
 229         struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
 230         sp->magic = 0;
 231 }
 232
 233 struct hwsim_chanctx_priv {
 234         u32 magic;
 235 };
 236
 237 #define HWSIM_CHANCTX_MAGIC 0x6d53774a
 238
 239 static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
 240 {
 241         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 242         WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
 243 }
 244
 245 static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
 246 {
 247         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 248         cp->magic = HWSIM_CHANCTX_MAGIC;
 249 }
 250
 251 static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
 252 {
 253         struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
 254         cp->magic = 0;
 255 }
 256
 257 static unsigned int hwsim_net_id;
 258
 259 static DEFINE_IDA(hwsim_netgroup_ida);
 260
 261 struct hwsim_net {
 262         int netgroup;
 263         u32 wmediumd;
 264 };
 265
 266 static inline int hwsim_net_get_netgroup(struct net *net)
 267 {
 268         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 269
 270         return hwsim_net->netgroup;
 271 }
 272
 273 static inline int hwsim_net_set_netgroup(struct net *net)
 274 {
 275         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 276
 277         hwsim_net->netgroup = ida_simple_get(&hwsim_netgroup_ida,
 278                                              0, 0, GFP_KERNEL);
 279         return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
 280 }
 281
 282 static inline u32 hwsim_net_get_wmediumd(struct net *net)
 283 {
 284         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 285
 286         return hwsim_net->wmediumd;
 287 }
 288
 289 static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
 290 {
 291         struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
 292
 293         hwsim_net->wmediumd = portid;
 294 }
 295
 296 static struct class *hwsim_class;
 297
 298 static struct net_device *hwsim_mon; /* global monitor netdev */
 299
 300 #define CHAN2G(_freq)  { \
 301         .band = NL80211_BAND_2GHZ, \
 302         .center_freq = (_freq), \
 303         .hw_value = (_freq), \
 304         .max_power = 20, \
 305 }
 306
 307 #define CHAN5G(_freq) { \
 308         .band = NL80211_BAND_5GHZ, \
 309         .center_freq = (_freq), \
 310         .hw_value = (_freq), \
 311         .max_power = 20, \
 312 }
 313
 314 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
 315         CHAN2G(2412), /* Channel 1 */
 316         CHAN2G(2417), /* Channel 2 */
 317         CHAN2G(2422), /* Channel 3 */
 318         CHAN2G(2427), /* Channel 4 */
 319         CHAN2G(2432), /* Channel 5 */
 320         CHAN2G(2437), /* Channel 6 */
 321         CHAN2G(2442), /* Channel 7 */
 322         CHAN2G(2447), /* Channel 8 */
 323         CHAN2G(2452), /* Channel 9 */
 324         CHAN2G(2457), /* Channel 10 */
 325         CHAN2G(2462), /* Channel 11 */
 326         CHAN2G(2467), /* Channel 12 */
 327         CHAN2G(2472), /* Channel 13 */
 328         CHAN2G(2484), /* Channel 14 */
 329 };
 330
 331 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 332         CHAN5G(5180), /* Channel 36 */
 333         CHAN5G(5200), /* Channel 40 */
 334         CHAN5G(5220), /* Channel 44 */
 335         CHAN5G(5240), /* Channel 48 */
 336
 337         CHAN5G(5260), /* Channel 52 */
 338         CHAN5G(5280), /* Channel 56 */
 339         CHAN5G(5300), /* Channel 60 */
 340         CHAN5G(5320), /* Channel 64 */
 341
 342         CHAN5G(5500), /* Channel 100 */
 343         CHAN5G(5520), /* Channel 104 */
 344         CHAN5G(5540), /* Channel 108 */
 345         CHAN5G(5560), /* Channel 112 */
 346         CHAN5G(5580), /* Channel 116 */
 347         CHAN5G(5600), /* Channel 120 */
 348         CHAN5G(5620), /* Channel 124 */
 349         CHAN5G(5640), /* Channel 128 */
 350         CHAN5G(5660), /* Channel 132 */
 351         CHAN5G(5680), /* Channel 136 */
 352         CHAN5G(5700), /* Channel 140 */
 353
 354         CHAN5G(5745), /* Channel 149 */
 355         CHAN5G(5765), /* Channel 153 */
 356         CHAN5G(5785), /* Channel 157 */
 357         CHAN5G(5805), /* Channel 161 */
 358         CHAN5G(5825), /* Channel 165 */
 359         CHAN5G(5845), /* Channel 169 */
 360 };
 361
 362 static const struct ieee80211_rate hwsim_rates[] = {
 363         { .bitrate = 10 },
 364         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 365         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 366         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 367         { .bitrate = 60 },
 368         { .bitrate = 90 },
 369         { .bitrate = 120 },
 370         { .bitrate = 180 },
 371         { .bitrate = 240 },
 372         { .bitrate = 360 },
 373         { .bitrate = 480 },
 374         { .bitrate = 540 }
 375 };
 376
 377 static const u32 hwsim_ciphers[] = {
 378         WLAN_CIPHER_SUITE_WEP40,
 379         WLAN_CIPHER_SUITE_WEP104,
 380         WLAN_CIPHER_SUITE_TKIP,
 381         WLAN_CIPHER_SUITE_CCMP,
 382         WLAN_CIPHER_SUITE_CCMP_256,
 383         WLAN_CIPHER_SUITE_GCMP,
 384         WLAN_CIPHER_SUITE_GCMP_256,
 385         WLAN_CIPHER_SUITE_AES_CMAC,
 386         WLAN_CIPHER_SUITE_BIP_CMAC_256,
 387         WLAN_CIPHER_SUITE_BIP_GMAC_128,
 388         WLAN_CIPHER_SUITE_BIP_GMAC_256,
 389 };
 390
 391 #define OUI_QCA 0x001374
 392 #define QCA_NL80211_SUBCMD_TEST 1
 393 enum qca_nl80211_vendor_subcmds {
 394         QCA_WLAN_VENDOR_ATTR_TEST = 8,
 395         QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
 396 };
 397
 398 static const struct nla_policy
 399 hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
 400         [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
 401 };
 402
 403 static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
 404                                           struct wireless_dev *wdev,
 405                                           const void *data, int data_len)
 406 {
 407         struct sk_buff *skb;
 408         struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
 409         int err;
 410         u32 val;
 411
 412         err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len,
 413                         hwsim_vendor_test_policy, NULL);
 414         if (err)
 415                 return err;
 416         if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
 417                 return -EINVAL;
 418         val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
 419         wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
 420
 421         /* Send a vendor event as a test. Note that this would not normally be
 422          * done within a command handler, but rather, based on some other
 423          * trigger. For simplicity, this command is used to trigger the event
 424          * here.
 425          *
 426          * event_idx = 0 (index in mac80211_hwsim_vendor_commands)
 427          */
 428         skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
 429         if (skb) {
 430                 /* skb_put() or nla_put() will fill up data within
 431                  * NL80211_ATTR_VENDOR_DATA.
 432                  */
 433
 434                 /* Add vendor data */
 435                 nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
 436
 437                 /* Send the event - this will call nla_nest_end() */
 438                 cfg80211_vendor_event(skb, GFP_KERNEL);
 439         }
 440
 441         /* Send a response to the command */
 442         skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
 443         if (!skb)
 444                 return -ENOMEM;
 445
 446         /* skb_put() or nla_put() will fill up data within
 447          * NL80211_ATTR_VENDOR_DATA
 448          */
 449         nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
 450
 451         return cfg80211_vendor_cmd_reply(skb);
 452 }
 453
 454 static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
 455         {
 456                 .info = { .vendor_id = OUI_QCA,
 457                           .subcmd = QCA_NL80211_SUBCMD_TEST },
 458                 .flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
 459                 .doit = mac80211_hwsim_vendor_cmd_test,
 460         }
 461 };
 462
 463 /* Advertise support vendor specific events */
 464 static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
 465         { .vendor_id = OUI_QCA, .subcmd = 1 },
 466 };
 467
 468 static spinlock_t hwsim_radio_lock;
 469 static LIST_HEAD(hwsim_radios);
 470 static struct rhashtable hwsim_radios_rht;
 471 static int hwsim_radio_idx;
 472 static int hwsim_radios_generation = 1;
 473
 474 static struct platform_driver mac80211_hwsim_driver = {
 475         .driver = {
 476                 .name = "mac80211_hwsim",
 477         },
 478 };
 479
 480 struct mac80211_hwsim_data {
 481         struct list_head list;
 482         struct rhash_head rht;
 483         struct ieee80211_hw *hw;
 484         struct device *dev;
 485         struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 486         struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 487         struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
 488         struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 489         struct ieee80211_iface_combination if_combination;
 490         struct ieee80211_iface_limit if_limits[3];
 491         int n_if_limits;
 492
 493         u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
 494
 495         struct mac_address addresses[2];
 496         int channels, idx;
 497         bool use_chanctx;
 498         bool destroy_on_close;
 499         u32 portid;
 500         char alpha2[2];
 501         const struct ieee80211_regdomain *regd;
 502
 503         struct ieee80211_channel *tmp_chan;
 504         struct ieee80211_channel *roc_chan;
 505         u32 roc_duration;
 506         struct delayed_work roc_start;
 507         struct delayed_work roc_done;
 508         struct delayed_work hw_scan;
 509         struct cfg80211_scan_request *hw_scan_request;
 510         struct ieee80211_vif *hw_scan_vif;
 511         int scan_chan_idx;
 512         u8 scan_addr[ETH_ALEN];
 513         struct {
 514                 struct ieee80211_channel *channel;
 515                 unsigned long next_start, start, end;
 516         } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
 517                       ARRAY_SIZE(hwsim_channels_5ghz)];
 518
 519         struct ieee80211_channel *channel;
 520         u64 beacon_int  /* beacon interval in us */;
 521         unsigned int rx_filter;
 522         bool started, idle, scanning;
 523         struct mutex mutex;
 524         struct tasklet_hrtimer beacon_timer;
 525         enum ps_mode {
 526                 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
 527         } ps;
 528         bool ps_poll_pending;
 529         struct dentry *debugfs;
 530
 531         uintptr_t pending_cookie;
 532         struct sk_buff_head pending;    /* packets pending */
 533         /*
 534          * Only radios in the same group can communicate together (the
 535          * channel has to match too). Each bit represents a group. A
 536          * radio can be in more than one group.
 537          */
 538         u64 group;
 539
 540         /* group shared by radios created in the same netns */
 541         int netgroup;
 542         /* wmediumd portid responsible for netgroup of this radio */
 543         u32 wmediumd;
 544
 545         /* difference between this hw's clock and the real clock, in usecs */
 546         s64 tsf_offset;
 547         s64 bcn_delta;
 548         /* absolute beacon transmission time. Used to cover up "tx" delay. */
 549         u64 abs_bcn_ts;
 550
 551         /* Stats */
 552         u64 tx_pkts;
 553         u64 rx_pkts;
 554         u64 tx_bytes;
 555         u64 rx_bytes;
 556         u64 tx_dropped;
 557         u64 tx_failed;
 558 };
 559
 560 static const struct rhashtable_params hwsim_rht_params = {
 561         .nelem_hint = 2,
 562         .automatic_shrinking = true,
 563         .key_len = ETH_ALEN,
 564         .key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
 565         .head_offset = offsetof(struct mac80211_hwsim_data, rht),
 566 };
 567
 568 struct hwsim_radiotap_hdr {
 569         struct ieee80211_radiotap_header hdr;
 570         __le64 rt_tsft;
 571         u8 rt_flags;
 572         u8 rt_rate;
 573         __le16 rt_channel;
 574         __le16 rt_chbitmask;
 575 } __packed;
 576
 577 struct hwsim_radiotap_ack_hdr {
 578         struct ieee80211_radiotap_header hdr;
 579         u8 rt_flags;
 580         u8 pad;
 581         __le16 rt_channel;
 582         __le16 rt_chbitmask;
 583 } __packed;
 584
 585 /* MAC80211_HWSIM netlink family */
 586 static struct genl_family hwsim_genl_family;
 587
 588 enum hwsim_multicast_groups {
 589         HWSIM_MCGRP_CONFIG,
 590 };
 591
 592 static const struct genl_multicast_group hwsim_mcgrps[] = {
 593         [HWSIM_MCGRP_CONFIG] = { .name = "config", },
 594 };
 595
 596 /* MAC80211_HWSIM netlink policy */
 597
 598 static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
 599         [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 600         [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 601         [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
 602                                .len = IEEE80211_MAX_DATA_LEN },
 603         [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
 604         [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
 605         [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
 606         [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
 607                                  .len = IEEE80211_TX_MAX_RATES *
 608                                         sizeof(struct hwsim_tx_rate)},
 609         [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
 610         [HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
 611         [HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
 612         [HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 613         [HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
 614         [HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
 615         [HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
 616         [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
 617         [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
 618         [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
 619         [HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
 620         [HWSIM_ATTR_PERM_ADDR] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
 621         [HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
 622         [HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
 623 };
 624
 625 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
 626                                     struct sk_buff *skb,
 627                                     struct ieee80211_channel *chan);
 628
 629 /* sysfs attributes */
 630 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
 631 {
 632         struct mac80211_hwsim_data *data = dat;
 633         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 634         struct sk_buff *skb;
 635         struct ieee80211_pspoll *pspoll;
 636
 637         if (!vp->assoc)
 638                 return;
 639
 640         wiphy_dbg(data->hw->wiphy,
 641                   "%s: send PS-Poll to %pM for aid %d\n",
 642                   __func__, vp->bssid, vp->aid);
 643
 644         skb = dev_alloc_skb(sizeof(*pspoll));
 645         if (!skb)
 646                 return;
 647         pspoll = skb_put(skb, sizeof(*pspoll));
 648         pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 649                                             IEEE80211_STYPE_PSPOLL |
 650                                             IEEE80211_FCTL_PM);
 651         pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
 652         memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
 653         memcpy(pspoll->ta, mac, ETH_ALEN);
 654
 655         rcu_read_lock();
 656         mac80211_hwsim_tx_frame(data->hw, skb,
 657                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 658         rcu_read_unlock();
 659 }
 660
 661 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
 662                                 struct ieee80211_vif *vif, int ps)
 663 {
 664         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
 665         struct sk_buff *skb;
 666         struct ieee80211_hdr *hdr;
 667
 668         if (!vp->assoc)
 669                 return;
 670
 671         wiphy_dbg(data->hw->wiphy,
 672                   "%s: send data::nullfunc to %pM ps=%d\n",
 673                   __func__, vp->bssid, ps);
 674
 675         skb = dev_alloc_skb(sizeof(*hdr));
 676         if (!skb)
 677                 return;
 678         hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
 679         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
 680                                          IEEE80211_STYPE_NULLFUNC |
 681                                          IEEE80211_FCTL_TODS |
 682                                          (ps ? IEEE80211_FCTL_PM : 0));
 683         hdr->duration_id = cpu_to_le16(0);
 684         memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
 685         memcpy(hdr->addr2, mac, ETH_ALEN);
 686         memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
 687
 688         rcu_read_lock();
 689         mac80211_hwsim_tx_frame(data->hw, skb,
 690                                 rcu_dereference(vif->chanctx_conf)->def.chan);
 691         rcu_read_unlock();
 692 }
 693
 694
 695 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
 696                                    struct ieee80211_vif *vif)
 697 {
 698         struct mac80211_hwsim_data *data = dat;
 699         hwsim_send_nullfunc(data, mac, vif, 1);
 700 }
 701
 702 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
 703                                       struct ieee80211_vif *vif)
 704 {
 705         struct mac80211_hwsim_data *data = dat;
 706         hwsim_send_nullfunc(data, mac, vif, 0);
 707 }
 708
 709 static int hwsim_fops_ps_read(void *dat, u64 *val)
 710 {
 711         struct mac80211_hwsim_data *data = dat;
 712         *val = data->ps;
 713         return 0;
 714 }
 715
 716 static int hwsim_fops_ps_write(void *dat, u64 val)
 717 {
 718         struct mac80211_hwsim_data *data = dat;
 719         enum ps_mode old_ps;
 720
 721         if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
 722             val != PS_MANUAL_POLL)
 723                 return -EINVAL;
 724
 725         if (val == PS_MANUAL_POLL) {
 726                 if (data->ps != PS_ENABLED)
 727                         return -EINVAL;
 728                 local_bh_disable();
 729                 ieee80211_iterate_active_interfaces_atomic(
 730                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 731                         hwsim_send_ps_poll, data);
 732                 local_bh_enable();
 733                 return 0;
 734         }
 735         old_ps = data->ps;
 736         data->ps = val;
 737
 738         local_bh_disable();
 739         if (old_ps == PS_DISABLED && val != PS_DISABLED) {
 740                 ieee80211_iterate_active_interfaces_atomic(
 741                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                         hwsim_send_nullfunc_ps, data);
 743         } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
 744                 ieee80211_iterate_active_interfaces_atomic(
 745                         data->hw, IEEE80211_IFACE_ITER_NORMAL,
 746                         hwsim_send_nullfunc_no_ps, data);
 747         }
 748         local_bh_enable();
 749
 750         return 0;
 751 }
 752
 753 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
 754                         "%llu\n");
 755
 756 static int hwsim_write_simulate_radar(void *dat, u64 val)
 757 {
 758         struct mac80211_hwsim_data *data = dat;
 759
 760         ieee80211_radar_detected(data->hw);
 761
 762         return 0;
 763 }
 764
 765 DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
 766                         hwsim_write_simulate_radar, "%llu\n");
 767
 768 static int hwsim_fops_group_read(void *dat, u64 *val)
 769 {
 770         struct mac80211_hwsim_data *data = dat;
 771         *val = data->group;
 772         return 0;
 773 }
 774
 775 static int hwsim_fops_group_write(void *dat, u64 val)
 776 {
 777         struct mac80211_hwsim_data *data = dat;
 778         data->group = val;
 779         return 0;
 780 }
 781
 782 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
 783                         hwsim_fops_group_read, hwsim_fops_group_write,
 784                         "%llx\n");
 785
 786 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
 787                                         struct net_device *dev)
 788 {
 789         /* TODO: allow packet injection */
 790         dev_kfree_skb(skb);
 791         return NETDEV_TX_OK;
 792 }
 793
 794 static inline u64 mac80211_hwsim_get_tsf_raw(void)
 795 {
 796         return ktime_to_us(ktime_get_real());
 797 }
 798
 799 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
 800 {
 801         u64 now = mac80211_hwsim_get_tsf_raw();
 802         return cpu_to_le64(now + data->tsf_offset);
 803 }
 804
 805 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
 806                                   struct ieee80211_vif *vif)
 807 {
 808         struct mac80211_hwsim_data *data = hw->priv;
 809         return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
 810 }
 811
 812 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
 813                 struct ieee80211_vif *vif, u64 tsf)
 814 {
 815         struct mac80211_hwsim_data *data = hw->priv;
 816         u64 now = mac80211_hwsim_get_tsf(hw, vif);
 817         u32 bcn_int = data->beacon_int;
 818         u64 delta = abs(tsf - now);
 819
 820         /* adjust after beaconing with new timestamp at old TBTT */
 821         if (tsf > now) {
 822                 data->tsf_offset += delta;
 823                 data->bcn_delta = do_div(delta, bcn_int);
 824         } else {
 825                 data->tsf_offset -= delta;
 826                 data->bcn_delta = -(s64)do_div(delta, bcn_int);
 827         }
 828 }
 829
 830 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 831                                       struct sk_buff *tx_skb,
 832                                       struct ieee80211_channel *chan)
 833 {
 834         struct mac80211_hwsim_data *data = hw->priv;
 835         struct sk_buff *skb;
 836         struct hwsim_radiotap_hdr *hdr;
 837         u16 flags;
 838         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 839         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 840
 841         if (WARN_ON(!txrate))
 842                 return;
 843
 844         if (!netif_running(hwsim_mon))
 845                 return;
 846
 847         skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
 848         if (skb == NULL)
 849                 return;
 850
 851         hdr = skb_push(skb, sizeof(*hdr));
 852         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 853         hdr->hdr.it_pad = 0;
 854         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 855         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 856                                           (1 << IEEE80211_RADIOTAP_RATE) |
 857                                           (1 << IEEE80211_RADIOTAP_TSFT) |
 858                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 859         hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 860         hdr->rt_flags = 0;
 861         hdr->rt_rate = txrate->bitrate / 5;
 862         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 863         flags = IEEE80211_CHAN_2GHZ;
 864         if (txrate->flags & IEEE80211_RATE_ERP_G)
 865                 flags |= IEEE80211_CHAN_OFDM;
 866         else
 867                 flags |= IEEE80211_CHAN_CCK;
 868         hdr->rt_chbitmask = cpu_to_le16(flags);
 869
 870         skb->dev = hwsim_mon;
 871         skb_reset_mac_header(skb);
 872         skb->ip_summed = CHECKSUM_UNNECESSARY;
 873         skb->pkt_type = PACKET_OTHERHOST;
 874         skb->protocol = htons(ETH_P_802_2);
 875         memset(skb->cb, 0, sizeof(skb->cb));
 876         netif_rx(skb);
 877 }
 878
 879
 880 static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
 881                                        const u8 *addr)
 882 {
 883         struct sk_buff *skb;
 884         struct hwsim_radiotap_ack_hdr *hdr;
 885         u16 flags;
 886         struct ieee80211_hdr *hdr11;
 887
 888         if (!netif_running(hwsim_mon))
 889                 return;
 890
 891         skb = dev_alloc_skb(100);
 892         if (skb == NULL)
 893                 return;
 894
 895         hdr = skb_put(skb, sizeof(*hdr));
 896         hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
 897         hdr->hdr.it_pad = 0;
 898         hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
 899         hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
 900                                           (1 << IEEE80211_RADIOTAP_CHANNEL));
 901         hdr->rt_flags = 0;
 902         hdr->pad = 0;
 903         hdr->rt_channel = cpu_to_le16(chan->center_freq);
 904         flags = IEEE80211_CHAN_2GHZ;
 905         hdr->rt_chbitmask = cpu_to_le16(flags);
 906
 907         hdr11 = skb_put(skb, 10);
 908         hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
 909                                            IEEE80211_STYPE_ACK);
 910         hdr11->duration_id = cpu_to_le16(0);
 911         memcpy(hdr11->addr1, addr, ETH_ALEN);
 912
 913         skb->dev = hwsim_mon;
 914         skb_reset_mac_header(skb);
 915         skb->ip_summed = CHECKSUM_UNNECESSARY;
 916         skb->pkt_type = PACKET_OTHERHOST;
 917         skb->protocol = htons(ETH_P_802_2);
 918         memset(skb->cb, 0, sizeof(skb->cb));
 919         netif_rx(skb);
 920 }
 921
 922 struct mac80211_hwsim_addr_match_data {
 923         u8 addr[ETH_ALEN];
 924         bool ret;
 925 };
 926
 927 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
 928                                      struct ieee80211_vif *vif)
 929 {
 930         struct mac80211_hwsim_addr_match_data *md = data;
 931
 932         if (memcmp(mac, md->addr, ETH_ALEN) == 0)
 933                 md->ret = true;
 934 }
 935
 936 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
 937                                       const u8 *addr)
 938 {
 939         struct mac80211_hwsim_addr_match_data md = {
 940                 .ret = false,
 941         };
 942
 943         if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
 944                 return true;
 945
 946         memcpy(md.addr, addr, ETH_ALEN);
 947
 948         ieee80211_iterate_active_interfaces_atomic(data->hw,
 949                                                    IEEE80211_IFACE_ITER_NORMAL,
 950                                                    mac80211_hwsim_addr_iter,
 951                                                    &md);
 952
 953         return md.ret;
 954 }
 955
 956 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
 957                            struct sk_buff *skb)
 958 {
 959         switch (data->ps) {
 960         case PS_DISABLED:
 961                 return true;
 962         case PS_ENABLED:
 963                 return false;
 964         case PS_AUTO_POLL:
 965                 /* TODO: accept (some) Beacons by default and other frames only
 966                  * if pending PS-Poll has been sent */
 967                 return true;
 968         case PS_MANUAL_POLL:
 969                 /* Allow unicast frames to own address if there is a pending
 970                  * PS-Poll */
 971                 if (data->ps_poll_pending &&
 972                     mac80211_hwsim_addr_match(data, skb->data + 4)) {
 973                         data->ps_poll_pending = false;
 974                         return true;
 975                 }
 976                 return false;
 977         }
 978
 979         return true;
 980 }
 981
 982 static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
 983                                   struct sk_buff *skb, int portid)
 984 {
 985         struct net *net;
 986         bool found = false;
 987         int res = -ENOENT;
 988
 989         rcu_read_lock();
 990         for_each_net_rcu(net) {
 991                 if (data->netgroup == hwsim_net_get_netgroup(net)) {
 992                         res = genlmsg_unicast(net, skb, portid);
 993                         found = true;
 994                         break;
 995                 }
 996         }
 997         rcu_read_unlock();
 998
 999         if (!found)
1000                 nlmsg_free(skb);
1001
1002         return res;
1003 }
1004
1005 static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
1006 {
1007         u16 result = 0;
1008
1009         if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
1010                 result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
1011         if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1012                 result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
1013         if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
1014                 result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
1015         if (rate->flags & IEEE80211_TX_RC_MCS)
1016                 result |= MAC80211_HWSIM_TX_RC_MCS;
1017         if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
1018                 result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
1019         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1020                 result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
1021         if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
1022                 result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
1023         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
1024                 result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
1025         if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
1026                 result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
1027         if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1028                 result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
1029         if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1030                 result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
1031
1032         return result;
1033 }
1034
1035 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
1036                                        struct sk_buff *my_skb,
1037                                        int dst_portid)
1038 {
1039         struct sk_buff *skb;
1040         struct mac80211_hwsim_data *data = hw->priv;
1041         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
1042         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
1043         void *msg_head;
1044         unsigned int hwsim_flags = 0;
1045         int i;
1046         struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
1047         struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
1048         uintptr_t cookie;
1049
1050         if (data->ps != PS_DISABLED)
1051                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1052         /* If the queue contains MAX_QUEUE skb's drop some */
1053         if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
1054                 /* Droping until WARN_QUEUE level */
1055                 while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
1056                         ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
1057                         data->tx_dropped++;
1058                 }
1059         }
1060
1061         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1062         if (skb == NULL)
1063                 goto nla_put_failure;
1064
1065         msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
1066                                HWSIM_CMD_FRAME);
1067         if (msg_head == NULL) {
1068                 pr_debug("mac80211_hwsim: problem with msg_head\n");
1069                 goto nla_put_failure;
1070         }
1071
1072         if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
1073                     ETH_ALEN, data->addresses[1].addr))
1074                 goto nla_put_failure;
1075
1076         /* We get the skb->data */
1077         if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
1078                 goto nla_put_failure;
1079
1080         /* We get the flags for this transmission, and we translate them to
1081            wmediumd flags  */
1082
1083         if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
1084                 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
1085
1086         if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1087                 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
1088
1089         if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
1090                 goto nla_put_failure;
1091
1092         if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq))
1093                 goto nla_put_failure;
1094
1095         /* We get the tx control (rate and retries) info*/
1096
1097         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1098                 tx_attempts[i].idx = info->status.rates[i].idx;
1099                 tx_attempts_flags[i].idx = info->status.rates[i].idx;
1100                 tx_attempts[i].count = info->status.rates[i].count;
1101                 tx_attempts_flags[i].flags =
1102                                 trans_tx_rate_flags_ieee2hwsim(
1103                                                 &info->status.rates[i]);
1104         }
1105
1106         if (nla_put(skb, HWSIM_ATTR_TX_INFO,
1107                     sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
1108                     tx_attempts))
1109                 goto nla_put_failure;
1110
1111         if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
1112                     sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
1113                     tx_attempts_flags))
1114                 goto nla_put_failure;
1115
1116         /* We create a cookie to identify this skb */
1117         data->pending_cookie++;
1118         cookie = data->pending_cookie;
1119         info->rate_driver_data[0] = (void *)cookie;
1120         if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
1121                 goto nla_put_failure;
1122
1123         genlmsg_end(skb, msg_head);
1124         if (hwsim_unicast_netgroup(data, skb, dst_portid))
1125                 goto err_free_txskb;
1126
1127         /* Enqueue the packet */
1128         skb_queue_tail(&data->pending, my_skb);
1129         data->tx_pkts++;
1130         data->tx_bytes += my_skb->len;
1131         return;
1132
1133 nla_put_failure:
1134         nlmsg_free(skb);
1135 err_free_txskb:
1136         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
1137         ieee80211_free_txskb(hw, my_skb);
1138         data->tx_failed++;
1139 }
1140
1141 static bool hwsim_chans_compat(struct ieee80211_channel *c1,
1142                                struct ieee80211_channel *c2)
1143 {
1144         if (!c1 || !c2)
1145                 return false;
1146
1147         return c1->center_freq == c2->center_freq;
1148 }
1149
1150 struct tx_iter_data {
1151         struct ieee80211_channel *channel;
1152         bool receive;
1153 };
1154
1155 static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
1156                                    struct ieee80211_vif *vif)
1157 {
1158         struct tx_iter_data *data = _data;
1159
1160         if (!vif->chanctx_conf)
1161                 return;
1162
1163         if (!hwsim_chans_compat(data->channel,
1164                                 rcu_dereference(vif->chanctx_conf)->def.chan))
1165                 return;
1166
1167         data->receive = true;
1168 }
1169
1170 static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
1171 {
1172         /*
1173          * To enable this code, #define the HWSIM_RADIOTAP_OUI,
1174          * e.g. like this:
1175          * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
1176          * (but you should use a valid OUI, not that)
1177          *
1178          * If anyone wants to 'donate' a radiotap OUI/subns code
1179          * please send a patch removing this #ifdef and changing
1180          * the values accordingly.
1181          */
1182 #ifdef HWSIM_RADIOTAP_OUI
1183         struct ieee80211_vendor_radiotap *rtap;
1184
1185         /*
1186          * Note that this code requires the headroom in the SKB
1187          * that was allocated earlier.
1188          */
1189         rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
1190         rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
1191         rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
1192         rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
1193         rtap->subns = 127;
1194
1195         /*
1196          * Radiotap vendor namespaces can (and should) also be
1197          * split into fields by using the standard radiotap
1198          * presence bitmap mechanism. Use just BIT(0) here for
1199          * the presence bitmap.
1200          */
1201         rtap->present = BIT(0);
1202         /* We have 8 bytes of (dummy) data */
1203         rtap->len = 8;
1204         /* For testing, also require it to be aligned */
1205         rtap->align = 8;
1206         /* And also test that padding works, 4 bytes */
1207         rtap->pad = 4;
1208         /* push the data */
1209         memcpy(rtap->data, "ABCDEFGH", 8);
1210         /* make sure to clear padding, mac80211 doesn't */
1211         memset(rtap->data + 8, 0, 4);
1212
1213         IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
1214 #endif
1215 }
1216
1217 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
1218                                           struct sk_buff *skb,
1219                                           struct ieee80211_channel *chan)
1220 {
1221         struct mac80211_hwsim_data *data = hw->priv, *data2;
1222         bool ack = false;
1223         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1224         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1225         struct ieee80211_rx_status rx_status;
1226         u64 now;
1227
1228         memset(&rx_status, 0, sizeof(rx_status));
1229         rx_status.flag |= RX_FLAG_MACTIME_START;
1230         rx_status.freq = chan->center_freq;
1231         rx_status.band = chan->band;
1232         if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
1233                 rx_status.rate_idx =
1234                         ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
1235                 rx_status.nss =
1236                         ieee80211_rate_get_vht_nss(&info->control.rates[0]);
1237                 rx_status.encoding = RX_ENC_VHT;
1238         } else {
1239                 rx_status.rate_idx = info->control.rates[0].idx;
1240                 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
1241                         rx_status.encoding = RX_ENC_HT;
1242         }
1243         if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
1244                 rx_status.bw = RATE_INFO_BW_40;
1245         else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
1246                 rx_status.bw = RATE_INFO_BW_80;
1247         else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
1248                 rx_status.bw = RATE_INFO_BW_160;
1249         else
1250                 rx_status.bw = RATE_INFO_BW_20;
1251         if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
1252                 rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
1253         /* TODO: simulate real signal strength (and optional packet loss) */
1254         rx_status.signal = -50;
1255         if (info->control.vif)
1256                 rx_status.signal += info->control.vif->bss_conf.txpower;
1257
1258         if (data->ps != PS_DISABLED)
1259                 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1260
1261         /* release the skb's source info */
1262         skb_orphan(skb);
1263         skb_dst_drop(skb);
1264         skb->mark = 0;
1265         secpath_reset(skb);
1266         nf_reset(skb);
1267
1268         /*
1269          * Get absolute mactime here so all HWs RX at the "same time", and
1270          * absolute TX time for beacon mactime so the timestamp matches.
1271          * Giving beacons a different mactime than non-beacons looks messy, but
1272          * it helps the Toffset be exact and a ~10us mactime discrepancy
1273          * probably doesn't really matter.
1274          */
1275         if (ieee80211_is_beacon(hdr->frame_control) ||
1276             ieee80211_is_probe_resp(hdr->frame_control)) {
1277                 rx_status.boottime_ns = ktime_get_boot_ns();
1278                 now = data->abs_bcn_ts;
1279         } else {
1280                 now = mac80211_hwsim_get_tsf_raw();
1281         }
1282
1283         /* Copy skb to all enabled radios that are on the current frequency */
1284         spin_lock(&hwsim_radio_lock);
1285         list_for_each_entry(data2, &hwsim_radios, list) {
1286                 struct sk_buff *nskb;
1287                 struct tx_iter_data tx_iter_data = {
1288                         .receive = false,
1289                         .channel = chan,
1290                 };
1291
1292                 if (data == data2)
1293                         continue;
1294
1295                 if (!data2->started || (data2->idle && !data2->tmp_chan) ||
1296                     !hwsim_ps_rx_ok(data2, skb))
1297                         continue;
1298
1299                 if (!(data->group & data2->group))
1300                         continue;
1301
1302                 if (data->netgroup != data2->netgroup)
1303                         continue;
1304
1305                 if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
1306                     !hwsim_chans_compat(chan, data2->channel)) {
1307                         ieee80211_iterate_active_interfaces_atomic(
1308                                 data2->hw, IEEE80211_IFACE_ITER_NORMAL,
1309                                 mac80211_hwsim_tx_iter, &tx_iter_data);
1310                         if (!tx_iter_data.receive)
1311                                 continue;
1312                 }
1313
1314                 /*
1315                  * reserve some space for our vendor and the normal
1316                  * radiotap header, since we're copying anyway
1317                  */
1318                 if (skb->len < PAGE_SIZE && paged_rx) {
1319                         struct page *page = alloc_page(GFP_ATOMIC);
1320
1321                         if (!page)
1322                                 continue;
1323
1324                         nskb = dev_alloc_skb(128);
1325                         if (!nskb) {
1326                                 __free_page(page);
1327                                 continue;
1328                         }
1329
1330                         memcpy(page_address(page), skb->data, skb->len);
1331                         skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
1332                 } else {
1333                         nskb = skb_copy(skb, GFP_ATOMIC);
1334                         if (!nskb)
1335                                 continue;
1336                 }
1337
1338                 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
1339                         ack = true;
1340
1341                 rx_status.mactime = now + data2->tsf_offset;
1342
1343                 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
1344
1345                 mac80211_hwsim_add_vendor_rtap(nskb);
1346
1347                 data2->rx_pkts++;
1348                 data2->rx_bytes += nskb->len;
1349                 ieee80211_rx_irqsafe(data2->hw, nskb);
1350         }
1351         spin_unlock(&hwsim_radio_lock);
1352
1353         return ack;
1354 }
1355
1356 static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
1357                               struct ieee80211_tx_control *control,
1358                               struct sk_buff *skb)
1359 {
1360         struct mac80211_hwsim_data *data = hw->priv;
1361         struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1362         struct ieee80211_hdr *hdr = (void *)skb->data;
1363         struct ieee80211_chanctx_conf *chanctx_conf;
1364         struct ieee80211_channel *channel;
1365         bool ack;
1366         u32 _portid;
1367
1368         if (WARN_ON(skb->len < 10)) {
1369                 /* Should not happen; just a sanity check for addr1 use */
1370                 ieee80211_free_txskb(hw, skb);
1371                 return;
1372         }
1373
1374         if (!data->use_chanctx) {
1375                 channel = data->channel;
1376         } else if (txi->hw_queue == 4) {
1377                 channel = data->tmp_chan;
1378         } else {
1379                 chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
1380                 if (chanctx_conf)
1381                         channel = chanctx_conf->def.chan;
1382                 else
1383                         channel = NULL;
1384         }
1385
1386         if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
1387                 ieee80211_free_txskb(hw, skb);
1388                 return;
1389         }
1390
1391         if (data->idle && !data->tmp_chan) {
1392                 wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
1393                 ieee80211_free_txskb(hw, skb);
1394                 return;
1395         }
1396
1397         if (txi->control.vif)
1398                 hwsim_check_magic(txi->control.vif);
1399         if (control->sta)
1400                 hwsim_check_sta_magic(control->sta);
1401
1402         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1403                 ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
1404                                        txi->control.rates,
1405                                        ARRAY_SIZE(txi->control.rates));
1406
1407         if (skb->len >= 24 + 8 &&
1408             ieee80211_is_probe_resp(hdr->frame_control)) {
1409                 /* fake header transmission time */
1410                 struct ieee80211_mgmt *mgmt;
1411                 struct ieee80211_rate *txrate;
1412                 u64 ts;
1413
1414                 mgmt = (struct ieee80211_mgmt *)skb->data;
1415                 txrate = ieee80211_get_tx_rate(hw, txi);
1416                 ts = mac80211_hwsim_get_tsf_raw();
1417                 mgmt->u.probe_resp.timestamp =
1418                         cpu_to_le64(ts + data->tsf_offset +
1419                                     24 * 8 * 10 / txrate->bitrate);
1420         }
1421
1422         mac80211_hwsim_monitor_rx(hw, skb, channel);
1423
1424         /* wmediumd mode check */
1425         _portid = READ_ONCE(data->wmediumd);
1426
1427         if (_portid)
1428                 return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
1429
1430         /* NO wmediumd detected, perfect medium simulation */
1431         data->tx_pkts++;
1432         data->tx_bytes += skb->len;
1433         ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
1434
1435         if (ack && skb->len >= 16)
1436                 mac80211_hwsim_monitor_ack(channel, hdr->addr2);
1437
1438         ieee80211_tx_info_clear_status(txi);
1439
1440         /* frame was transmitted at most favorable rate at first attempt */
1441         txi->control.rates[0].count = 1;
1442         txi->control.rates[1].idx = -1;
1443
1444         if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
1445                 txi->flags |= IEEE80211_TX_STAT_ACK;
1446         ieee80211_tx_status_irqsafe(hw, skb);
1447 }
1448
1449
1450 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
1451 {
1452         struct mac80211_hwsim_data *data = hw->priv;
1453         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1454         data->started = true;
1455         return 0;
1456 }
1457
1458
1459 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
1460 {
1461         struct mac80211_hwsim_data *data = hw->priv;
1462         data->started = false;
1463         tasklet_hrtimer_cancel(&data->beacon_timer);
1464         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1465 }
1466
1467
1468 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
1469                                         struct ieee80211_vif *vif)
1470 {
1471         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1472                   __func__, ieee80211_vif_type_p2p(vif),
1473                   vif->addr);
1474         hwsim_set_magic(vif);
1475
1476         vif->cab_queue = 0;
1477         vif->hw_queue[IEEE80211_AC_VO] = 0;
1478         vif->hw_queue[IEEE80211_AC_VI] = 1;
1479         vif->hw_queue[IEEE80211_AC_BE] = 2;
1480         vif->hw_queue[IEEE80211_AC_BK] = 3;
1481
1482         return 0;
1483 }
1484
1485
1486 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
1487                                            struct ieee80211_vif *vif,
1488                                            enum nl80211_iftype newtype,
1489                                            bool newp2p)
1490 {
1491         newtype = ieee80211_iftype_p2p(newtype, newp2p);
1492         wiphy_dbg(hw->wiphy,
1493                   "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
1494                   __func__, ieee80211_vif_type_p2p(vif),
1495                     newtype, vif->addr);
1496         hwsim_check_magic(vif);
1497
1498         /*
1499          * interface may change from non-AP to AP in
1500          * which case this needs to be set up again
1501          */
1502         vif->cab_queue = 0;
1503
1504         return 0;
1505 }
1506
1507 static void mac80211_hwsim_remove_interface(
1508         struct ieee80211_hw *hw, struct ieee80211_vif *vif)
1509 {
1510         wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
1511                   __func__, ieee80211_vif_type_p2p(vif),
1512                   vif->addr);
1513         hwsim_check_magic(vif);
1514         hwsim_clear_magic(vif);
1515 }
1516
1517 static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
1518                                     struct sk_buff *skb,
1519                                     struct ieee80211_channel *chan)
1520 {
1521         struct mac80211_hwsim_data *data = hw->priv;
1522         u32 _pid = READ_ONCE(data->wmediumd);
1523
1524         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
1525                 struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
1526                 ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
1527                                        txi->control.rates,
1528                                        ARRAY_SIZE(txi->control.rates));
1529         }
1530
1531         mac80211_hwsim_monitor_rx(hw, skb, chan);
1532
1533         if (_pid)
1534                 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
1535
1536         mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
1537         dev_kfree_skb(skb);
1538 }
1539
1540 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
1541                                      struct ieee80211_vif *vif)
1542 {
1543         struct mac80211_hwsim_data *data = arg;
1544         struct ieee80211_hw *hw = data->hw;
1545         struct ieee80211_tx_info *info;
1546         struct ieee80211_rate *txrate;
1547         struct ieee80211_mgmt *mgmt;
1548         struct sk_buff *skb;
1549
1550         hwsim_check_magic(vif);
1551
1552         if (vif->type != NL80211_IFTYPE_AP &&
1553             vif->type != NL80211_IFTYPE_MESH_POINT &&
1554             vif->type != NL80211_IFTYPE_ADHOC)
1555                 return;
1556
1557         skb = ieee80211_beacon_get(hw, vif);
1558         if (skb == NULL)
1559                 return;
1560         info = IEEE80211_SKB_CB(skb);
1561         if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
1562                 ieee80211_get_tx_rates(vif, NULL, skb,
1563                                        info->control.rates,
1564                                        ARRAY_SIZE(info->control.rates));
1565
1566         txrate = ieee80211_get_tx_rate(hw, info);
1567
1568         mgmt = (struct ieee80211_mgmt *) skb->data;
1569         /* fake header transmission time */
1570         data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
1571         mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
1572                                                data->tsf_offset +
1573                                                24 * 8 * 10 / txrate->bitrate);
1574
1575         mac80211_hwsim_tx_frame(hw, skb,
1576                                 rcu_dereference(vif->chanctx_conf)->def.chan);
1577
1578         if (vif->csa_active && ieee80211_csa_is_complete(vif))
1579                 ieee80211_csa_finish(vif);
1580 }
1581
1582 static enum hrtimer_restart
1583 mac80211_hwsim_beacon(struct hrtimer *timer)
1584 {
1585         struct mac80211_hwsim_data *data =
1586                 container_of(timer, struct mac80211_hwsim_data,
1587                              beacon_timer.timer);
1588         struct ieee80211_hw *hw = data->hw;
1589         u64 bcn_int = data->beacon_int;
1590         ktime_t next_bcn;
1591
1592         if (!data->started)
1593                 goto out;
1594
1595         ieee80211_iterate_active_interfaces_atomic(
1596                 hw, IEEE80211_IFACE_ITER_NORMAL,
1597                 mac80211_hwsim_beacon_tx, data);
1598
1599         /* beacon at new TBTT + beacon interval */
1600         if (data->bcn_delta) {
1601                 bcn_int -= data->bcn_delta;
1602                 data->bcn_delta = 0;
1603         }
1604
1605         next_bcn = ktime_add(hrtimer_get_expires(timer),
1606                              ns_to_ktime(bcn_int * 1000));
1607         tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
1608 out:
1609         return HRTIMER_NORESTART;
1610 }
1611
1612 static const char * const hwsim_chanwidths[] = {
1613         [NL80211_CHAN_WIDTH_20_NOHT] = "noht",
1614         [NL80211_CHAN_WIDTH_20] = "ht20",
1615         [NL80211_CHAN_WIDTH_40] = "ht40",
1616         [NL80211_CHAN_WIDTH_80] = "vht80",
1617         [NL80211_CHAN_WIDTH_80P80] = "vht80p80",
1618         [NL80211_CHAN_WIDTH_160] = "vht160",
1619 };
1620
1621 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
1622 {
1623         struct mac80211_hwsim_data *data = hw->priv;
1624         struct ieee80211_conf *conf = &hw->conf;
1625         static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
1626                 [IEEE80211_SMPS_AUTOMATIC] = "auto",
1627                 [IEEE80211_SMPS_OFF] = "off",
1628                 [IEEE80211_SMPS_STATIC] = "static",
1629                 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
1630         };
1631         int idx;
1632
1633         if (conf->chandef.chan)
1634                 wiphy_dbg(hw->wiphy,
1635                           "%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
1636                           __func__,
1637                           conf->chandef.chan->center_freq,
1638                           conf->chandef.center_freq1,
1639                           conf->chandef.center_freq2,
1640                           hwsim_chanwidths[conf->chandef.width],
1641                           !!(conf->flags & IEEE80211_CONF_IDLE),
1642                           !!(conf->flags & IEEE80211_CONF_PS),
1643                           smps_modes[conf->smps_mode]);
1644         else
1645                 wiphy_dbg(hw->wiphy,
1646                           "%s (freq=0 idle=%d ps=%d smps=%s)\n",
1647                           __func__,
1648                           !!(conf->flags & IEEE80211_CONF_IDLE),
1649                           !!(conf->flags & IEEE80211_CONF_PS),
1650                           smps_modes[conf->smps_mode]);
1651
1652         data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1653
1654         WARN_ON(conf->chandef.chan && data->use_chanctx);
1655
1656         mutex_lock(&data->mutex);
1657         if (data->scanning && conf->chandef.chan) {
1658                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1659                         if (data->survey_data[idx].channel == data->channel) {
1660                                 data->survey_data[idx].start =
1661                                         data->survey_data[idx].next_start;
1662                                 data->survey_data[idx].end = jiffies;
1663                                 break;
1664                         }
1665                 }
1666
1667                 data->channel = conf->chandef.chan;
1668
1669                 for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
1670                         if (data->survey_data[idx].channel &&
1671                             data->survey_data[idx].channel != data->channel)
1672                                 continue;
1673                         data->survey_data[idx].channel = data->channel;
1674                         data->survey_data[idx].next_start = jiffies;
1675                         break;
1676                 }
1677         } else {
1678                 data->channel = conf->chandef.chan;
1679         }
1680         mutex_unlock(&data->mutex);
1681
1682         if (!data->started || !data->beacon_int)
1683                 tasklet_hrtimer_cancel(&data->beacon_timer);
1684         else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
1685                 u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
1686                 u32 bcn_int = data->beacon_int;
1687                 u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
1688
1689                 tasklet_hrtimer_start(&data->beacon_timer,
1690                                       ns_to_ktime(until_tbtt * 1000),
1691                                       HRTIMER_MODE_REL);
1692         }
1693
1694         return 0;
1695 }
1696
1697
1698 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
1699                                             unsigned int changed_flags,
1700                                             unsigned int *total_flags,u64 multicast)
1701 {
1702         struct mac80211_hwsim_data *data = hw->priv;
1703
1704         wiphy_dbg(hw->wiphy, "%s\n", __func__);
1705
1706         data->rx_filter = 0;
1707         if (*total_flags & FIF_ALLMULTI)
1708                 data->rx_filter |= FIF_ALLMULTI;
1709
1710         *total_flags = data->rx_filter;
1711 }
1712
1713 static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
1714                                        struct ieee80211_vif *vif)
1715 {
1716         unsigned int *count = data;
1717         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1718
1719         if (vp->bcn_en)
1720                 (*count)++;
1721 }
1722
1723 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
1724                                             struct ieee80211_vif *vif,
1725                                             struct ieee80211_bss_conf *info,
1726                                             u32 changed)
1727 {
1728         struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1729         struct mac80211_hwsim_data *data = hw->priv;
1730
1731         hwsim_check_magic(vif);
1732
1733         wiphy_dbg(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
1734                   __func__, changed, vif->addr);
1735
1736         if (changed & BSS_CHANGED_BSSID) {
1737                 wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
1738                           __func__, info->bssid);
1739                 memcpy(vp->bssid, info->bssid, ETH_ALEN);
1740         }
1741
1742         if (changed & BSS_CHANGED_ASSOC) {
1743                 wiphy_dbg(hw->wiphy, "  ASSOC: assoc=%d aid=%d\n",
1744                           info->assoc, info->aid);
1745                 vp->assoc = info->assoc;
1746                 vp->aid = info->aid;
1747         }
1748
1749         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1750                 wiphy_dbg(hw->wiphy, "  BCN EN: %d (BI=%u)\n",
1751                           info->enable_beacon, info->beacon_int);
1752                 vp->bcn_en = info->enable_beacon;
1753                 if (data->started &&
1754                     !hrtimer_is_queued(&data->beacon_timer.timer) &&
1755                     info->enable_beacon) {
1756                         u64 tsf, until_tbtt;
1757                         u32 bcn_int;
1758                         data->beacon_int = info->beacon_int * 1024;
1759                         tsf = mac80211_hwsim_get_tsf(hw, vif);
1760                         bcn_int = data->beacon_int;
1761                         until_tbtt = bcn_int - do_div(tsf, bcn_int);
1762                         tasklet_hrtimer_start(&data->beacon_timer,
1763                                               ns_to_ktime(until_tbtt * 1000),
1764                                               HRTIMER_MODE_REL);
1765                 } else if (!info->enable_beacon) {
1766                         unsigned int count = 0;
1767                         ieee80211_iterate_active_interfaces_atomic(
1768                                 data->hw, IEEE80211_IFACE_ITER_NORMAL,
1769                                 mac80211_hwsim_bcn_en_iter, &count);
1770                         wiphy_dbg(hw->wiphy, "  beaconing vifs remaining: %u",
1771                                   count);
1772                         if (count == 0) {
1773                                 tasklet_hrtimer_cancel(&data->beacon_timer);
1774                                 data->beacon_int = 0;
1775                         }
1776                 }
1777         }
1778
1779         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1780                 wiphy_dbg(hw->wiphy, "  ERP_CTS_PROT: %d\n",
1781                           info->use_cts_prot);
1782         }
1783
1784         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1785                 wiphy_dbg(hw->wiphy, "  ERP_PREAMBLE: %d\n",
1786                           info->use_short_preamble);
1787         }
1788
1789         if (changed & BSS_CHANGED_ERP_SLOT) {
1790                 wiphy_dbg(hw->wiphy, "  ERP_SLOT: %d\n", info->use_short_slot);
1791         }
1792
1793         if (changed & BSS_CHANGED_HT) {
1794                 wiphy_dbg(hw->wiphy, "  HT: op_mode=0x%x\n",
1795                           info->ht_operation_mode);
1796         }
1797
1798         if (changed & BSS_CHANGED_BASIC_RATES) {
1799                 wiphy_dbg(hw->wiphy, "  BASIC_RATES: 0x%llx\n",
1800                           (unsigned long long) info->basic_rates);
1801         }
1802
1803         if (changed & BSS_CHANGED_TXPOWER)
1804                 wiphy_dbg(hw->wiphy, "  TX Power: %d dBm\n", info->txpower);
1805 }
1806
1807 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
1808                                   struct ieee80211_vif *vif,
1809                                   struct ieee80211_sta *sta)
1810 {
1811         hwsim_check_magic(vif);
1812         hwsim_set_sta_magic(sta);
1813
1814         return 0;
1815 }
1816
1817 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
1818                                      struct ieee80211_vif *vif,
1819                                      struct ieee80211_sta *sta)
1820 {
1821         hwsim_check_magic(vif);
1822         hwsim_clear_sta_magic(sta);
1823
1824         return 0;
1825 }
1826
1827 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
1828                                       struct ieee80211_vif *vif,
1829                                       enum sta_notify_cmd cmd,
1830                                       struct ieee80211_sta *sta)
1831 {
1832         hwsim_check_magic(vif);
1833
1834         switch (cmd) {
1835         case STA_NOTIFY_SLEEP:
1836         case STA_NOTIFY_AWAKE:
1837                 /* TODO: make good use of these flags */
1838                 break;
1839         default:
1840                 WARN(1, "Invalid sta notify: %d\n", cmd);
1841                 break;
1842         }
1843 }
1844
1845 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1846                                   struct ieee80211_sta *sta,
1847                                   bool set)
1848 {
1849         hwsim_check_sta_magic(sta);
1850         return 0;
1851 }
1852
1853 static int mac80211_hwsim_conf_tx(
1854         struct ieee80211_hw *hw,
1855         struct ieee80211_vif *vif, u16 queue,
1856         const struct ieee80211_tx_queue_params *params)
1857 {
1858         wiphy_dbg(hw->wiphy,
1859                   "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1860                   __func__, queue,
1861                   params->txop, params->cw_min,
1862                   params->cw_max, params->aifs);
1863         return 0;
1864 }
1865
1866 static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
1867                                      struct survey_info *survey)
1868 {
1869         struct mac80211_hwsim_data *hwsim = hw->priv;
1870
1871         if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
1872                 return -ENOENT;
1873
1874         mutex_lock(&hwsim->mutex);
1875         survey->channel = hwsim->survey_data[idx].channel;
1876         if (!survey->channel) {
1877                 mutex_unlock(&hwsim->mutex);
1878                 return -ENOENT;
1879         }
1880
1881         /*
1882          * Magically conjured dummy values --- this is only ok for simulated hardware.
1883          *
1884          * A real driver which cannot determine real values noise MUST NOT
1885          * report any, especially not a magically conjured ones :-)
1886          */
1887         survey->filled = SURVEY_INFO_NOISE_DBM |
1888                          SURVEY_INFO_TIME |
1889                          SURVEY_INFO_TIME_BUSY;
1890         survey->noise = -92;
1891         survey->time =
1892                 jiffies_to_msecs(hwsim->survey_data[idx].end -
1893                                  hwsim->survey_data[idx].start);
1894         /* report 12.5% of channel time is used */
1895         survey->time_busy = survey->time/8;
1896         mutex_unlock(&hwsim->mutex);
1897
1898         return 0;
1899 }
1900
1901 #ifdef CONFIG_NL80211_TESTMODE
1902 /*
1903  * This section contains example code for using netlink
1904  * attributes with the testmode command in nl80211.
1905  */
1906
1907 /* These enums need to be kept in sync with userspace */
1908 enum hwsim_testmode_attr {
1909         __HWSIM_TM_ATTR_INVALID = 0,
1910         HWSIM_TM_ATTR_CMD       = 1,
1911         HWSIM_TM_ATTR_PS        = 2,
1912
1913         /* keep last */
1914         __HWSIM_TM_ATTR_AFTER_LAST,
1915         HWSIM_TM_ATTR_MAX       = __HWSIM_TM_ATTR_AFTER_LAST - 1
1916 };
1917
1918 enum hwsim_testmode_cmd {
1919         HWSIM_TM_CMD_SET_PS             = 0,
1920         HWSIM_TM_CMD_GET_PS             = 1,
1921         HWSIM_TM_CMD_STOP_QUEUES        = 2,
1922         HWSIM_TM_CMD_WAKE_QUEUES        = 3,
1923 };
1924
1925 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1926         [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1927         [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1928 };
1929
1930 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1931                                        struct ieee80211_vif *vif,
1932                                        void *data, int len)
1933 {
1934         struct mac80211_hwsim_data *hwsim = hw->priv;
1935         struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1936         struct sk_buff *skb;
1937         int err, ps;
1938
1939         err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1940                         hwsim_testmode_policy, NULL);
1941         if (err)
1942                 return err;
1943
1944         if (!tb[HWSIM_TM_ATTR_CMD])
1945                 return -EINVAL;
1946
1947         switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1948         case HWSIM_TM_CMD_SET_PS:
1949                 if (!tb[HWSIM_TM_ATTR_PS])
1950                         return -EINVAL;
1951                 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1952                 return hwsim_fops_ps_write(hwsim, ps);
1953         case HWSIM_TM_CMD_GET_PS:
1954                 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1955                                                 nla_total_size(sizeof(u32)));
1956                 if (!skb)
1957                         return -ENOMEM;
1958                 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1959                         goto nla_put_failure;
1960                 return cfg80211_testmode_reply(skb);
1961         case HWSIM_TM_CMD_STOP_QUEUES:
1962                 ieee80211_stop_queues(hw);
1963                 return 0;
1964         case HWSIM_TM_CMD_WAKE_QUEUES:
1965                 ieee80211_wake_queues(hw);
1966                 return 0;
1967         default:
1968                 return -EOPNOTSUPP;
1969         }
1970
1971  nla_put_failure:
1972         kfree_skb(skb);
1973         return -ENOBUFS;
1974 }
1975 #endif
1976
1977 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1978                                        struct ieee80211_vif *vif,
1979                                        struct ieee80211_ampdu_params *params)
1980 {
1981         struct ieee80211_sta *sta = params->sta;
1982         enum ieee80211_ampdu_mlme_action action = params->action;
1983         u16 tid = params->tid;
1984
1985         switch (action) {
1986         case IEEE80211_AMPDU_TX_START:
1987                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1988                 break;
1989         case IEEE80211_AMPDU_TX_STOP_CONT:
1990         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1991         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1992                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1993                 break;
1994         case IEEE80211_AMPDU_TX_OPERATIONAL:
1995                 break;
1996         case IEEE80211_AMPDU_RX_START:
1997         case IEEE80211_AMPDU_RX_STOP:
1998                 break;
1999         default:
2000                 return -EOPNOTSUPP;
2001         }
2002
2003         return 0;
2004 }
2005
2006 static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
2007                                  struct ieee80211_vif *vif,
2008                                  u32 queues, bool drop)
2009 {
2010         /* Not implemented, queues only on kernel side */
2011 }
2012
2013 static void hw_scan_work(struct work_struct *work)
2014 {
2015         struct mac80211_hwsim_data *hwsim =
2016                 container_of(work, struct mac80211_hwsim_data, hw_scan.work);
2017         struct cfg80211_scan_request *req = hwsim->hw_scan_request;
2018         int dwell, i;
2019
2020         mutex_lock(&hwsim->mutex);
2021         if (hwsim->scan_chan_idx >= req->n_channels) {
2022                 struct cfg80211_scan_info info = {
2023                         .aborted = false,
2024                 };
2025
2026                 wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
2027                 ieee80211_scan_completed(hwsim->hw, &info);
2028                 hwsim->hw_scan_request = NULL;
2029                 hwsim->hw_scan_vif = NULL;
2030                 hwsim->tmp_chan = NULL;
2031                 mutex_unlock(&hwsim->mutex);
2032                 return;
2033         }
2034
2035         wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
2036                   req->channels[hwsim->scan_chan_idx]->center_freq);
2037
2038         hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
2039         if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
2040                                       IEEE80211_CHAN_RADAR) ||
2041             !req->n_ssids) {
2042                 dwell = 120;
2043         } else {
2044                 dwell = 30;
2045                 /* send probes */
2046                 for (i = 0; i < req->n_ssids; i++) {
2047                         struct sk_buff *probe;
2048                         struct ieee80211_mgmt *mgmt;
2049
2050                         probe = ieee80211_probereq_get(hwsim->hw,
2051                                                        hwsim->scan_addr,
2052                                                        req->ssids[i].ssid,
2053                                                        req->ssids[i].ssid_len,
2054                                                        req->ie_len);
2055                         if (!probe)
2056                                 continue;
2057
2058                         mgmt = (struct ieee80211_mgmt *) probe->data;
2059                         memcpy(mgmt->da, req->bssid, ETH_ALEN);
2060                         memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
2061
2062                         if (req->ie_len)
2063                                 skb_put_data(probe, req->ie, req->ie_len);
2064
2065                         local_bh_disable();
2066                         mac80211_hwsim_tx_frame(hwsim->hw, probe,
2067                                                 hwsim->tmp_chan);
2068                         local_bh_enable();
2069                 }
2070         }
2071         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
2072                                      msecs_to_jiffies(dwell));
2073         hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
2074         hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
2075         hwsim->survey_data[hwsim->scan_chan_idx].end =
2076                 jiffies + msecs_to_jiffies(dwell);
2077         hwsim->scan_chan_idx++;
2078         mutex_unlock(&hwsim->mutex);
2079 }
2080
2081 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
2082                                   struct ieee80211_vif *vif,
2083                                   struct ieee80211_scan_request *hw_req)
2084 {
2085         struct mac80211_hwsim_data *hwsim = hw->priv;
2086         struct cfg80211_scan_request *req = &hw_req->req;
2087
2088         mutex_lock(&hwsim->mutex);
2089         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2090                 mutex_unlock(&hwsim->mutex);
2091                 return -EBUSY;
2092         }
2093         hwsim->hw_scan_request = req;
2094         hwsim->hw_scan_vif = vif;
2095         hwsim->scan_chan_idx = 0;
2096         if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
2097                 get_random_mask_addr(hwsim->scan_addr,
2098                                      hw_req->req.mac_addr,
2099                                      hw_req->req.mac_addr_mask);
2100         else
2101                 memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
2102         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2103         mutex_unlock(&hwsim->mutex);
2104
2105         wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
2106
2107         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
2108
2109         return 0;
2110 }
2111
2112 static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
2113                                           struct ieee80211_vif *vif)
2114 {
2115         struct mac80211_hwsim_data *hwsim = hw->priv;
2116         struct cfg80211_scan_info info = {
2117                 .aborted = true,
2118         };
2119
2120         wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
2121
2122         cancel_delayed_work_sync(&hwsim->hw_scan);
2123
2124         mutex_lock(&hwsim->mutex);
2125         ieee80211_scan_completed(hwsim->hw, &info);
2126         hwsim->tmp_chan = NULL;
2127         hwsim->hw_scan_request = NULL;
2128         hwsim->hw_scan_vif = NULL;
2129         mutex_unlock(&hwsim->mutex);
2130 }
2131
2132 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
2133                                    struct ieee80211_vif *vif,
2134                                    const u8 *mac_addr)
2135 {
2136         struct mac80211_hwsim_data *hwsim = hw->priv;
2137
2138         mutex_lock(&hwsim->mutex);
2139
2140         if (hwsim->scanning) {
2141                 pr_debug("two hwsim sw_scans detected!\n");
2142                 goto out;
2143         }
2144
2145         pr_debug("hwsim sw_scan request, prepping stuff\n");
2146
2147         memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
2148         hwsim->scanning = true;
2149         memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
2150
2151 out:
2152         mutex_unlock(&hwsim->mutex);
2153 }
2154
2155 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
2156                                             struct ieee80211_vif *vif)
2157 {
2158         struct mac80211_hwsim_data *hwsim = hw->priv;
2159
2160         mutex_lock(&hwsim->mutex);
2161
2162         pr_debug("hwsim sw_scan_complete\n");
2163         hwsim->scanning = false;
2164         eth_zero_addr(hwsim->scan_addr);
2165
2166         mutex_unlock(&hwsim->mutex);
2167 }
2168
2169 static void hw_roc_start(struct work_struct *work)
2170 {
2171         struct mac80211_hwsim_data *hwsim =
2172                 container_of(work, struct mac80211_hwsim_data, roc_start.work);
2173
2174         mutex_lock(&hwsim->mutex);
2175
2176         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
2177         hwsim->tmp_chan = hwsim->roc_chan;
2178         ieee80211_ready_on_channel(hwsim->hw);
2179
2180         ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
2181                                      msecs_to_jiffies(hwsim->roc_duration));
2182
2183         mutex_unlock(&hwsim->mutex);
2184 }
2185
2186 static void hw_roc_done(struct work_struct *work)
2187 {
2188         struct mac80211_hwsim_data *hwsim =
2189                 container_of(work, struct mac80211_hwsim_data, roc_done.work);
2190
2191         mutex_lock(&hwsim->mutex);
2192         ieee80211_remain_on_channel_expired(hwsim->hw);
2193         hwsim->tmp_chan = NULL;
2194         mutex_unlock(&hwsim->mutex);
2195
2196         wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
2197 }
2198
2199 static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
2200                               struct ieee80211_vif *vif,
2201                               struct ieee80211_channel *chan,
2202                               int duration,
2203                               enum ieee80211_roc_type type)
2204 {
2205         struct mac80211_hwsim_data *hwsim = hw->priv;
2206
2207         mutex_lock(&hwsim->mutex);
2208         if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
2209                 mutex_unlock(&hwsim->mutex);
2210                 return -EBUSY;
2211         }
2212
2213         hwsim->roc_chan = chan;
2214         hwsim->roc_duration = duration;
2215         mutex_unlock(&hwsim->mutex);
2216
2217         wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
2218                   chan->center_freq, duration);
2219         ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
2220
2221         return 0;
2222 }
2223
2224 static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
2225 {
2226         struct mac80211_hwsim_data *hwsim = hw->priv;
2227
2228         cancel_delayed_work_sync(&hwsim->roc_start);
2229         cancel_delayed_work_sync(&hwsim->roc_done);
2230
2231         mutex_lock(&hwsim->mutex);
2232         hwsim->tmp_chan = NULL;
2233         mutex_unlock(&hwsim->mutex);
2234
2235         wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
2236
2237         return 0;
2238 }
2239
2240 static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
2241                                       struct ieee80211_chanctx_conf *ctx)
2242 {
2243         hwsim_set_chanctx_magic(ctx);
2244         wiphy_dbg(hw->wiphy,
2245                   "add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2246                   ctx->def.chan->center_freq, ctx->def.width,
2247                   ctx->def.center_freq1, ctx->def.center_freq2);
2248         return 0;
2249 }
2250
2251 static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
2252                                           struct ieee80211_chanctx_conf *ctx)
2253 {
2254         wiphy_dbg(hw->wiphy,
2255                   "remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2256                   ctx->def.chan->center_freq, ctx->def.width,
2257                   ctx->def.center_freq1, ctx->def.center_freq2);
2258         hwsim_check_chanctx_magic(ctx);
2259         hwsim_clear_chanctx_magic(ctx);
2260 }
2261
2262 static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
2263                                           struct ieee80211_chanctx_conf *ctx,
2264                                           u32 changed)
2265 {
2266         hwsim_check_chanctx_magic(ctx);
2267         wiphy_dbg(hw->wiphy,
2268                   "change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
2269                   ctx->def.chan->center_freq, ctx->def.width,
2270                   ctx->def.center_freq1, ctx->def.center_freq2);
2271 }
2272
2273 static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
2274                                              struct ieee80211_vif *vif,
2275                                              struct ieee80211_chanctx_conf *ctx)
2276 {
2277         hwsim_check_magic(vif);
2278         hwsim_check_chanctx_magic(ctx);
2279
2280         return 0;
2281 }
2282
2283 static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
2284                                                 struct ieee80211_vif *vif,
2285                                                 struct ieee80211_chanctx_conf *ctx)
2286 {
2287         hwsim_check_magic(vif);
2288         hwsim_check_chanctx_magic(ctx);
2289 }
2290
2291 static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
2292         "tx_pkts_nic",
2293         "tx_bytes_nic",
2294         "rx_pkts_nic",
2295         "rx_bytes_nic",
2296         "d_tx_dropped",
2297         "d_tx_failed",
2298         "d_ps_mode",
2299         "d_group",
2300 };
2301
2302 #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
2303
2304 static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
2305                                           struct ieee80211_vif *vif,
2306                                           u32 sset, u8 *data)
2307 {
2308         if (sset == ETH_SS_STATS)
2309                 memcpy(data, *mac80211_hwsim_gstrings_stats,
2310                        sizeof(mac80211_hwsim_gstrings_stats));
2311 }
2312
2313 static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
2314                                             struct ieee80211_vif *vif, int sset)
2315 {
2316         if (sset == ETH_SS_STATS)
2317                 return MAC80211_HWSIM_SSTATS_LEN;
2318         return 0;
2319 }
2320
2321 static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
2322                                         struct ieee80211_vif *vif,
2323                                         struct ethtool_stats *stats, u64 *data)
2324 {
2325         struct mac80211_hwsim_data *ar = hw->priv;
2326         int i = 0;
2327
2328         data[i++] = ar->tx_pkts;
2329         data[i++] = ar->tx_bytes;
2330         data[i++] = ar->rx_pkts;
2331         data[i++] = ar->rx_bytes;
2332         data[i++] = ar->tx_dropped;
2333         data[i++] = ar->tx_failed;
2334         data[i++] = ar->ps;
2335         data[i++] = ar->group;
2336
2337         WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
2338 }
2339
2340 #define HWSIM_COMMON_OPS                                        \
2341         .tx = mac80211_hwsim_tx,                                \
2342         .start = mac80211_hwsim_start,                          \
2343         .stop = mac80211_hwsim_stop,                            \
2344         .add_interface = mac80211_hwsim_add_interface,          \
2345         .change_interface = mac80211_hwsim_change_interface,    \
2346         .remove_interface = mac80211_hwsim_remove_interface,    \
2347         .config = mac80211_hwsim_config,                        \
2348         .configure_filter = mac80211_hwsim_configure_filter,    \
2349         .bss_info_changed = mac80211_hwsim_bss_info_changed,    \
2350         .sta_add = mac80211_hwsim_sta_add,                      \
2351         .sta_remove = mac80211_hwsim_sta_remove,                \
2352         .sta_notify = mac80211_hwsim_sta_notify,                \
2353         .set_tim = mac80211_hwsim_set_tim,                      \
2354         .conf_tx = mac80211_hwsim_conf_tx,                      \
2355         .get_survey = mac80211_hwsim_get_survey,                \
2356         CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)      \
2357         .ampdu_action = mac80211_hwsim_ampdu_action,            \
2358         .flush = mac80211_hwsim_flush,                          \
2359         .get_tsf = mac80211_hwsim_get_tsf,                      \
2360         .set_tsf = mac80211_hwsim_set_tsf,                      \
2361         .get_et_sset_count = mac80211_hwsim_get_et_sset_count,  \
2362         .get_et_stats = mac80211_hwsim_get_et_stats,            \
2363         .get_et_strings = mac80211_hwsim_get_et_strings,
2364
2365 static const struct ieee80211_ops mac80211_hwsim_ops = {
2366         HWSIM_COMMON_OPS
2367         .sw_scan_start = mac80211_hwsim_sw_scan,
2368         .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
2369 };
2370
2371 static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
2372         HWSIM_COMMON_OPS
2373         .hw_scan = mac80211_hwsim_hw_scan,
2374         .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan,
2375         .sw_scan_start = NULL,
2376         .sw_scan_complete = NULL,
2377         .remain_on_channel = mac80211_hwsim_roc,
2378         .cancel_remain_on_channel = mac80211_hwsim_croc,
2379         .add_chanctx = mac80211_hwsim_add_chanctx,
2380         .remove_chanctx = mac80211_hwsim_remove_chanctx,
2381         .change_chanctx = mac80211_hwsim_change_chanctx,
2382         .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,
2383         .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
2384 };
2385
2386 struct hwsim_new_radio_params {
2387         unsigned int channels;
2388         const char *reg_alpha2;
2389         const struct ieee80211_regdomain *regd;
2390         bool reg_strict;
2391         bool p2p_device;
2392         bool use_chanctx;
2393         bool destroy_on_close;
2394         const char *hwname;
2395         bool no_vif;
2396         const u8 *perm_addr;
2397         u32 iftypes;
2398         u32 *ciphers;
2399         u8 n_ciphers;
2400 };
2401
2402 static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
2403                                    struct genl_info *info)
2404 {
2405         if (info)
2406                 genl_notify(&hwsim_genl_family, mcast_skb, info,
2407                             HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2408         else
2409                 genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
2410                                   HWSIM_MCGRP_CONFIG, GFP_KERNEL);
2411 }
2412
2413 static int append_radio_msg(struct sk_buff *skb, int id,
2414                             struct hwsim_new_radio_params *param)
2415 {
2416         int ret;
2417
2418         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
2419         if (ret < 0)
2420                 return ret;
2421
2422         if (param->channels) {
2423                 ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
2424                 if (ret < 0)
2425                         return ret;
2426         }
2427
2428         if (param->reg_alpha2) {
2429                 ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
2430                               param->reg_alpha2);
2431                 if (ret < 0)
2432                         return ret;
2433         }
2434
2435         if (param->regd) {
2436                 int i;
2437
2438                 for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
2439                         if (hwsim_world_regdom_custom[i] != param->regd)
2440                                 continue;
2441
2442                         ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
2443                         if (ret < 0)
2444                                 return ret;
2445                         break;
2446                 }
2447         }
2448
2449         if (param->reg_strict) {
2450                 ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
2451                 if (ret < 0)
2452                         return ret;
2453         }
2454
2455         if (param->p2p_device) {
2456                 ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
2457                 if (ret < 0)
2458                         return ret;
2459         }
2460
2461         if (param->use_chanctx) {
2462                 ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
2463                 if (ret < 0)
2464                         return ret;
2465         }
2466
2467         if (param->hwname) {
2468                 ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
2469                               strlen(param->hwname), param->hwname);
2470                 if (ret < 0)
2471                         return ret;
2472         }
2473
2474         return 0;
2475 }
2476
2477 static void hwsim_mcast_new_radio(int id, struct genl_info *info,
2478                                   struct hwsim_new_radio_params *param)
2479 {
2480         struct sk_buff *mcast_skb;
2481         void *data;
2482
2483         mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2484         if (!mcast_skb)
2485                 return;
2486
2487         data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
2488                            HWSIM_CMD_NEW_RADIO);
2489         if (!data)
2490                 goto out_err;
2491
2492         if (append_radio_msg(mcast_skb, id, param) < 0)
2493                 goto out_err;
2494
2495         genlmsg_end(mcast_skb, data);
2496
2497         hwsim_mcast_config_msg(mcast_skb, info);
2498         return;
2499
2500 out_err:
2501         nlmsg_free(mcast_skb);
2502 }
2503
2504 static const struct ieee80211_sband_iftype_data he_capa_2ghz = {
2505         /* TODO: should we support other types, e.g., P2P?*/
2506         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2507         .he_cap = {
2508                 .has_he = true,
2509                 .he_cap_elem = {
2510                         .mac_cap_info[0] =
2511                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2512                         .mac_cap_info[1] =
2513                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2514                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2515                         .mac_cap_info[2] =
2516                                 IEEE80211_HE_MAC_CAP2_BSR |
2517                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2518                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2519                         .mac_cap_info[3] =
2520                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2521                                 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2522                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2523                         .phy_cap_info[1] =
2524                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2525                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2526                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2527                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2528                         .phy_cap_info[2] =
2529                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2530                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2531                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2532                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2533                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2534
2535                         /* Leave all the other PHY capability bytes unset, as
2536                          * DCM, beam forming, RU and PPE threshold information
2537                          * are not supported
2538                          */
2539                 },
2540                 .he_mcs_nss_supp = {
2541                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2542                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2543                         .rx_mcs_160 = cpu_to_le16(0xffff),
2544                         .tx_mcs_160 = cpu_to_le16(0xffff),
2545                         .rx_mcs_80p80 = cpu_to_le16(0xffff),
2546                         .tx_mcs_80p80 = cpu_to_le16(0xffff),
2547                 },
2548         },
2549 };
2550
2551 static const struct ieee80211_sband_iftype_data he_capa_5ghz = {
2552         /* TODO: should we support other types, e.g., P2P?*/
2553         .types_mask = BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP),
2554         .he_cap = {
2555                 .has_he = true,
2556                 .he_cap_elem = {
2557                         .mac_cap_info[0] =
2558                                 IEEE80211_HE_MAC_CAP0_HTC_HE,
2559                         .mac_cap_info[1] =
2560                                 IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
2561                                 IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
2562                         .mac_cap_info[2] =
2563                                 IEEE80211_HE_MAC_CAP2_BSR |
2564                                 IEEE80211_HE_MAC_CAP2_MU_CASCADING |
2565                                 IEEE80211_HE_MAC_CAP2_ACK_EN,
2566                         .mac_cap_info[3] =
2567                                 IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
2568                                 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_VHT_2,
2569                         .mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMDSU_IN_AMPDU,
2570                         .phy_cap_info[0] =
2571                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
2572                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
2573                                 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
2574                         .phy_cap_info[1] =
2575                                 IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
2576                                 IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
2577                                 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
2578                                 IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
2579                         .phy_cap_info[2] =
2580                                 IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
2581                                 IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
2582                                 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
2583                                 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
2584                                 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
2585
2586                         /* Leave all the other PHY capability bytes unset, as
2587                          * DCM, beam forming, RU and PPE threshold information
2588                          * are not supported
2589                          */
2590                 },
2591                 .he_mcs_nss_supp = {
2592                         .rx_mcs_80 = cpu_to_le16(0xfffa),
2593                         .tx_mcs_80 = cpu_to_le16(0xfffa),
2594                         .rx_mcs_160 = cpu_to_le16(0xfffa),
2595                         .tx_mcs_160 = cpu_to_le16(0xfffa),
2596                         .rx_mcs_80p80 = cpu_to_le16(0xfffa),
2597                         .tx_mcs_80p80 = cpu_to_le16(0xfffa),
2598                 },
2599         },
2600 };
2601
2602 static void mac80211_hswim_he_capab(struct ieee80211_supported_band *sband)
2603 {
2604         if (sband->band == NL80211_BAND_2GHZ)
2605                 sband->iftype_data =
2606                         (struct ieee80211_sband_iftype_data *)&he_capa_2ghz;
2607         else if (sband->band == NL80211_BAND_5GHZ)
2608                 sband->iftype_data =
2609                         (struct ieee80211_sband_iftype_data *)&he_capa_5ghz;
2610         else
2611                 return;
2612
2613         sband->n_iftype_data = 1;
2614 }
2615
2616 #ifdef CONFIG_MAC80211_MESH
2617 #define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
2618 #else
2619 #define HWSIM_MESH_BIT 0
2620 #endif
2621
2622 #define HWSIM_DEFAULT_IF_LIMIT \
2623         (BIT(NL80211_IFTYPE_STATION) | \
2624          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2625          BIT(NL80211_IFTYPE_AP) | \
2626          BIT(NL80211_IFTYPE_P2P_GO) | \
2627          HWSIM_MESH_BIT)
2628
2629 #define HWSIM_IFTYPE_SUPPORT_MASK \
2630         (BIT(NL80211_IFTYPE_STATION) | \
2631          BIT(NL80211_IFTYPE_AP) | \
2632          BIT(NL80211_IFTYPE_P2P_CLIENT) | \
2633          BIT(NL80211_IFTYPE_P2P_GO) | \
2634          BIT(NL80211_IFTYPE_ADHOC) | \
2635          BIT(NL80211_IFTYPE_MESH_POINT))
2636
2637 static int mac80211_hwsim_new_radio(struct genl_info *info,
2638                                     struct hwsim_new_radio_params *param)
2639 {
2640         int err;
2641         u8 addr[ETH_ALEN];
2642         struct mac80211_hwsim_data *data;
2643         struct ieee80211_hw *hw;
2644         enum nl80211_band band;
2645         const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
2646         struct net *net;
2647         int idx;
2648         int n_limits = 0;
2649
2650         if (WARN_ON(param->channels > 1 && !param->use_chanctx))
2651                 return -EINVAL;
2652
2653         spin_lock_bh(&hwsim_radio_lock);
2654         idx = hwsim_radio_idx++;
2655         spin_unlock_bh(&hwsim_radio_lock);
2656
2657         if (param->use_chanctx)
2658                 ops = &mac80211_hwsim_mchan_ops;
2659         hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
2660         if (!hw) {
2661                 pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
2662                 err = -ENOMEM;
2663                 goto failed;
2664         }
2665
2666         /* ieee80211_alloc_hw_nm may have used a default name */
2667         param->hwname = wiphy_name(hw->wiphy);
2668
2669         if (info)
2670                 net = genl_info_net(info);
2671         else
2672                 net = &init_net;
2673         wiphy_net_set(hw->wiphy, net);
2674
2675         data = hw->priv;
2676         data->hw = hw;
2677
2678         data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
2679         if (IS_ERR(data->dev)) {
2680                 printk(KERN_DEBUG
2681                        "mac80211_hwsim: device_create failed (%ld)\n",
2682                        PTR_ERR(data->dev));
2683                 err = -ENOMEM;
2684                 goto failed_drvdata;
2685         }
2686         data->dev->driver = &mac80211_hwsim_driver.driver;
2687         err = device_bind_driver(data->dev);
2688         if (err != 0) {
2689                 pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
2690                        err);
2691                 goto failed_bind;
2692         }
2693
2694         skb_queue_head_init(&data->pending);
2695
2696         SET_IEEE80211_DEV(hw, data->dev);
2697         if (!param->perm_addr) {
2698                 eth_zero_addr(addr);
2699                 addr[0] = 0x02;
2700                 addr[3] = idx >> 8;
2701                 addr[4] = idx;
2702                 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
2703                 /* Why need here second address ? */
2704                 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
2705                 data->addresses[1].addr[0] |= 0x40;
2706                 hw->wiphy->n_addresses = 2;
2707                 hw->wiphy->addresses = data->addresses;
2708                 /* possible address clash is checked at hash table insertion */
2709         } else {
2710                 memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
2711                 /* compatibility with automatically generated mac addr */
2712                 memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
2713                 hw->wiphy->n_addresses = 2;
2714                 hw->wiphy->addresses = data->addresses;
2715         }
2716
2717         data->channels = param->channels;
2718         data->use_chanctx = param->use_chanctx;
2719         data->idx = idx;
2720         data->destroy_on_close = param->destroy_on_close;
2721         if (info)
2722                 data->portid = info->snd_portid;
2723
2724         /* setup interface limits, only on interface types we support */
2725         if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
2726                 data->if_limits[n_limits].max = 1;
2727                 data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
2728                 n_limits++;
2729         }
2730
2731         if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
2732                 data->if_limits[n_limits].max = 2048;
2733                 /*
2734                  * For this case, we may only support a subset of
2735                  * HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
2736                  * bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
2737                  */
2738                 data->if_limits[n_limits].types =
2739                                         HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
2740                 n_limits++;
2741         }
2742
2743         if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
2744                 data->if_limits[n_limits].max = 1;
2745                 data->if_limits[n_limits].types =
2746                                                 BIT(NL80211_IFTYPE_P2P_DEVICE);
2747                 n_limits++;
2748         }
2749
2750         if (data->use_chanctx) {
2751                 hw->wiphy->max_scan_ssids = 255;
2752                 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
2753                 hw->wiphy->max_remain_on_channel_duration = 1000;
2754                 data->if_combination.radar_detect_widths = 0;
2755                 data->if_combination.num_different_channels = data->channels;
2756         } else {
2757                 data->if_combination.num_different_channels = 1;
2758                 data->if_combination.radar_detect_widths =
2759                                         BIT(NL80211_CHAN_WIDTH_20_NOHT) |
2760                                         BIT(NL80211_CHAN_WIDTH_20) |
2761                                         BIT(NL80211_CHAN_WIDTH_40) |
2762                                         BIT(NL80211_CHAN_WIDTH_80) |
2763                                         BIT(NL80211_CHAN_WIDTH_160);
2764         }
2765
2766         if (!n_limits) {
2767                 err = -EINVAL;
2768                 goto failed_hw;
2769         }
2770
2771         data->if_combination.n_limits = n_limits;
2772         data->if_combination.max_interfaces = 2048;
2773         data->if_combination.limits = data->if_limits;
2774
2775         hw->wiphy->iface_combinations = &data->if_combination;
2776         hw->wiphy->n_iface_combinations = 1;
2777
2778         if (param->ciphers) {
2779                 memcpy(data->ciphers, param->ciphers,
2780                        param->n_ciphers * sizeof(u32));
2781                 hw->wiphy->cipher_suites = data->ciphers;
2782                 hw->wiphy->n_cipher_suites = param->n_ciphers;
2783         }
2784
2785         INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
2786         INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
2787         INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
2788
2789         hw->queues = 5;
2790         hw->offchannel_tx_hw_queue = 4;
2791
2792         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
2793         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
2794         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
2795         ieee80211_hw_set(hw, QUEUE_CONTROL);
2796         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
2797         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2798         ieee80211_hw_set(hw, MFP_CAPABLE);
2799         ieee80211_hw_set(hw, SIGNAL_DBM);
2800         ieee80211_hw_set(hw, SUPPORTS_PS);
2801         ieee80211_hw_set(hw, TDLS_WIDER_BW);
2802         if (rctbl)
2803                 ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
2804         ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
2805
2806         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
2807                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
2808                             WIPHY_FLAG_AP_UAPSD |
2809                             WIPHY_FLAG_HAS_CHANNEL_SWITCH;
2810         hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
2811                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
2812                                NL80211_FEATURE_STATIC_SMPS |
2813                                NL80211_FEATURE_DYNAMIC_SMPS |
2814                                NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
2815         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
2816
2817         hw->wiphy->interface_modes = param->iftypes;
2818
2819         /* ask mac80211 to reserve space for magic */
2820         hw->vif_data_size = sizeof(struct hwsim_vif_priv);
2821         hw->sta_data_size = sizeof(struct hwsim_sta_priv);
2822         hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
2823
2824         memcpy(data->channels_2ghz, hwsim_channels_2ghz,
2825                 sizeof(hwsim_channels_2ghz));
2826         memcpy(data->channels_5ghz, hwsim_channels_5ghz,
2827                 sizeof(hwsim_channels_5ghz));
2828         memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
2829
2830         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
2831                 struct ieee80211_supported_band *sband = &data->bands[band];
2832
2833                 sband->band = band;
2834
2835                 switch (band) {
2836                 case NL80211_BAND_2GHZ:
2837                         sband->channels = data->channels_2ghz;
2838                         sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
2839                         sband->bitrates = data->rates;
2840                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
2841                         break;
2842                 case NL80211_BAND_5GHZ:
2843                         sband->channels = data->channels_5ghz;
2844                         sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
2845                         sband->bitrates = data->rates + 4;
2846                         sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
2847
2848                         sband->vht_cap.vht_supported = true;
2849                         sband->vht_cap.cap =
2850                                 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
2851                                 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
2852                                 IEEE80211_VHT_CAP_RXLDPC |
2853                                 IEEE80211_VHT_CAP_SHORT_GI_80 |
2854                                 IEEE80211_VHT_CAP_SHORT_GI_160 |
2855                                 IEEE80211_VHT_CAP_TXSTBC |
2856                                 IEEE80211_VHT_CAP_RXSTBC_4 |
2857                                 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
2858                         sband->vht_cap.vht_mcs.rx_mcs_map =
2859                                 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
2860                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
2861                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
2862                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
2863                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
2864                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
2865                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
2866                                             IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
2867                         sband->vht_cap.vht_mcs.tx_mcs_map =
2868                                 sband->vht_cap.vht_mcs.rx_mcs_map;
2869                         break;
2870                 default:
2871                         continue;
2872                 }
2873
2874                 sband->ht_cap.ht_supported = true;
2875                 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
2876                                     IEEE80211_HT_CAP_GRN_FLD |
2877                                     IEEE80211_HT_CAP_SGI_20 |
2878                                     IEEE80211_HT_CAP_SGI_40 |
2879                                     IEEE80211_HT_CAP_DSSSCCK40;
2880                 sband->ht_cap.ampdu_factor = 0x3;
2881                 sband->ht_cap.ampdu_density = 0x6;
2882                 memset(&sband->ht_cap.mcs, 0,
2883                        sizeof(sband->ht_cap.mcs));
2884                 sband->ht_cap.mcs.rx_mask[0] = 0xff;
2885                 sband->ht_cap.mcs.rx_mask[1] = 0xff;
2886                 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2887
2888                 mac80211_hswim_he_capab(sband);
2889
2890                 hw->wiphy->bands[band] = sband;
2891         }
2892
2893         /* By default all radios belong to the first group */
2894         data->group = 1;
2895         mutex_init(&data->mutex);
2896
2897         data->netgroup = hwsim_net_get_netgroup(net);
2898         data->wmediumd = hwsim_net_get_wmediumd(net);
2899
2900         /* Enable frame retransmissions for lossy channels */
2901         hw->max_rates = 4;
2902         hw->max_rate_tries = 11;
2903
2904         hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
2905         hw->wiphy->n_vendor_commands =
2906                 ARRAY_SIZE(mac80211_hwsim_vendor_commands);
2907         hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
2908         hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
2909
2910         if (param->reg_strict)
2911                 hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
2912         if (param->regd) {
2913                 data->regd = param->regd;
2914                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
2915                 wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
2916                 /* give the regulatory workqueue a chance to run */
2917                 schedule_timeout_interruptible(1);
2918         }
2919
2920         if (param->no_vif)
2921                 ieee80211_hw_set(hw, NO_AUTO_VIF);
2922
2923         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
2924
2925         tasklet_hrtimer_init(&data->beacon_timer,
2926                              mac80211_hwsim_beacon,
2927                              CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
2928
2929         err = ieee80211_register_hw(hw);
2930         if (err < 0) {
2931                 pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
2932                        err);
2933                 goto failed_hw;
2934         }
2935
2936         wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
2937
2938         if (param->reg_alpha2) {
2939                 data->alpha2[0] = param->reg_alpha2[0];
2940                 data->alpha2[1] = param->reg_alpha2[1];
2941                 regulatory_hint(hw->wiphy, param->reg_alpha2);
2942         }
2943
2944         data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
2945         debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
2946         debugfs_create_file("group", 0666, data->debugfs, data,
2947                             &hwsim_fops_group);
2948         if (!data->use_chanctx)
2949                 debugfs_create_file("dfs_simulate_radar", 0222,
2950                                     data->debugfs,
2951                                     data, &hwsim_simulate_radar);
2952
2953         spin_lock_bh(&hwsim_radio_lock);
2954         err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
2955                                      hwsim_rht_params);
2956         if (err < 0) {
2957                 if (info) {
2958                         GENL_SET_ERR_MSG(info, "perm addr already present");
2959                         NL_SET_BAD_ATTR(info->extack,
2960                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
2961                 }
2962                 spin_unlock_bh(&hwsim_radio_lock);
2963                 goto failed_final_insert;
2964         }
2965
2966         list_add_tail(&data->list, &hwsim_radios);
2967         hwsim_radios_generation++;
2968         spin_unlock_bh(&hwsim_radio_lock);
2969
2970         hwsim_mcast_new_radio(idx, info, param);
2971
2972         return idx;
2973
2974 failed_final_insert:
2975         debugfs_remove_recursive(data->debugfs);
2976         ieee80211_unregister_hw(data->hw);
2977 failed_hw:
2978         device_release_driver(data->dev);
2979 failed_bind:
2980         device_unregister(data->dev);
2981 failed_drvdata:
2982         ieee80211_free_hw(hw);
2983 failed:
2984         return err;
2985 }
2986
2987 static void hwsim_mcast_del_radio(int id, const char *hwname,
2988                                   struct genl_info *info)
2989 {
2990         struct sk_buff *skb;
2991         void *data;
2992         int ret;
2993
2994         skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
2995         if (!skb)
2996                 return;
2997
2998         data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
2999                            HWSIM_CMD_DEL_RADIO);
3000         if (!data)
3001                 goto error;
3002
3003         ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
3004         if (ret < 0)
3005                 goto error;
3006
3007         ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
3008                       hwname);
3009         if (ret < 0)
3010                 goto error;
3011
3012         genlmsg_end(skb, data);
3013
3014         hwsim_mcast_config_msg(skb, info);
3015
3016         return;
3017
3018 error:
3019         nlmsg_free(skb);
3020 }
3021
3022 static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
3023                                      const char *hwname,
3024                                      struct genl_info *info)
3025 {
3026         hwsim_mcast_del_radio(data->idx, hwname, info);
3027         debugfs_remove_recursive(data->debugfs);
3028         ieee80211_unregister_hw(data->hw);
3029         device_release_driver(data->dev);
3030         device_unregister(data->dev);
3031         ieee80211_free_hw(data->hw);
3032 }
3033
3034 static int mac80211_hwsim_get_radio(struct sk_buff *skb,
3035                                     struct mac80211_hwsim_data *data,
3036                                     u32 portid, u32 seq,
3037                                     struct netlink_callback *cb, int flags)
3038 {
3039         void *hdr;
3040         struct hwsim_new_radio_params param = { };
3041         int res = -EMSGSIZE;
3042
3043         hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
3044                           HWSIM_CMD_GET_RADIO);
3045         if (!hdr)
3046                 return -EMSGSIZE;
3047
3048         if (cb)
3049                 genl_dump_check_consistent(cb, hdr);
3050
3051         if (data->alpha2[0] && data->alpha2[1])
3052                 param.reg_alpha2 = data->alpha2;
3053
3054         param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
3055                                         REGULATORY_STRICT_REG);
3056         param.p2p_device = !!(data->hw->wiphy->interface_modes &
3057                                         BIT(NL80211_IFTYPE_P2P_DEVICE));
3058         param.use_chanctx = data->use_chanctx;
3059         param.regd = data->regd;
3060         param.channels = data->channels;
3061         param.hwname = wiphy_name(data->hw->wiphy);
3062
3063         res = append_radio_msg(skb, data->idx, &param);
3064         if (res < 0)
3065                 goto out_err;
3066
3067         genlmsg_end(skb, hdr);
3068         return 0;
3069
3070 out_err:
3071         genlmsg_cancel(skb, hdr);
3072         return res;
3073 }
3074
3075 static void mac80211_hwsim_free(void)
3076 {
3077         struct mac80211_hwsim_data *data;
3078
3079         spin_lock_bh(&hwsim_radio_lock);
3080         while ((data = list_first_entry_or_null(&hwsim_radios,
3081                                                 struct mac80211_hwsim_data,
3082                                                 list))) {
3083                 list_del(&data->list);
3084                 spin_unlock_bh(&hwsim_radio_lock);
3085                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3086                                          NULL);
3087                 spin_lock_bh(&hwsim_radio_lock);
3088         }
3089         spin_unlock_bh(&hwsim_radio_lock);
3090         class_destroy(hwsim_class);
3091 }
3092
3093 static const struct net_device_ops hwsim_netdev_ops = {
3094         .ndo_start_xmit         = hwsim_mon_xmit,
3095         .ndo_set_mac_address    = eth_mac_addr,
3096         .ndo_validate_addr      = eth_validate_addr,
3097 };
3098
3099 static void hwsim_mon_setup(struct net_device *dev)
3100 {
3101         dev->netdev_ops = &hwsim_netdev_ops;
3102         dev->needs_free_netdev = true;
3103         ether_setup(dev);
3104         dev->priv_flags |= IFF_NO_QUEUE;
3105         dev->type = ARPHRD_IEEE80211_RADIOTAP;
3106         eth_zero_addr(dev->dev_addr);
3107         dev->dev_addr[0] = 0x12;
3108 }
3109
3110 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
3111 {
3112         return rhashtable_lookup_fast(&hwsim_radios_rht,
3113                                       addr,
3114                                       hwsim_rht_params);
3115 }
3116
3117 static void hwsim_register_wmediumd(struct net *net, u32 portid)
3118 {
3119         struct mac80211_hwsim_data *data;
3120
3121         hwsim_net_set_wmediumd(net, portid);
3122
3123         spin_lock_bh(&hwsim_radio_lock);
3124         list_for_each_entry(data, &hwsim_radios, list) {
3125                 if (data->netgroup == hwsim_net_get_netgroup(net))
3126                         data->wmediumd = portid;
3127         }
3128         spin_unlock_bh(&hwsim_radio_lock);
3129 }
3130
3131 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
3132                                            struct genl_info *info)
3133 {
3134
3135         struct ieee80211_hdr *hdr;
3136         struct mac80211_hwsim_data *data2;
3137         struct ieee80211_tx_info *txi;
3138         struct hwsim_tx_rate *tx_attempts;
3139         u64 ret_skb_cookie;
3140         struct sk_buff *skb, *tmp;
3141         const u8 *src;
3142         unsigned int hwsim_flags;
3143         int i;
3144         bool found = false;
3145
3146         if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
3147             !info->attrs[HWSIM_ATTR_FLAGS] ||
3148             !info->attrs[HWSIM_ATTR_COOKIE] ||
3149             !info->attrs[HWSIM_ATTR_SIGNAL] ||
3150             !info->attrs[HWSIM_ATTR_TX_INFO])
3151                 goto out;
3152
3153         src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
3154         hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
3155         ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
3156
3157         data2 = get_hwsim_data_ref_from_addr(src);
3158         if (!data2)
3159                 goto out;
3160
3161         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3162                 goto out;
3163
3164         if (info->snd_portid != data2->wmediumd)
3165                 goto out;
3166
3167         /* look for the skb matching the cookie passed back from user */
3168         skb_queue_walk_safe(&data2->pending, skb, tmp) {
3169                 u64 skb_cookie;
3170
3171                 txi = IEEE80211_SKB_CB(skb);
3172                 skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0];
3173
3174                 if (skb_cookie == ret_skb_cookie) {
3175                         skb_unlink(skb, &data2->pending);
3176                         found = true;
3177                         break;
3178                 }
3179         }
3180
3181         /* not found */
3182         if (!found)
3183                 goto out;
3184
3185         /* Tx info received because the frame was broadcasted on user space,
3186          so we get all the necessary info: tx attempts and skb control buff */
3187
3188         tx_attempts = (struct hwsim_tx_rate *)nla_data(
3189                        info->attrs[HWSIM_ATTR_TX_INFO]);
3190
3191         /* now send back TX status */
3192         txi = IEEE80211_SKB_CB(skb);
3193
3194         ieee80211_tx_info_clear_status(txi);
3195
3196         for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
3197                 txi->status.rates[i].idx = tx_attempts[i].idx;
3198                 txi->status.rates[i].count = tx_attempts[i].count;
3199         }
3200
3201         txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3202
3203         if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
3204            (hwsim_flags & HWSIM_TX_STAT_ACK)) {
3205                 if (skb->len >= 16) {
3206                         hdr = (struct ieee80211_hdr *) skb->data;
3207                         mac80211_hwsim_monitor_ack(data2->channel,
3208                                                    hdr->addr2);
3209                 }
3210                 txi->flags |= IEEE80211_TX_STAT_ACK;
3211         }
3212         ieee80211_tx_status_irqsafe(data2->hw, skb);
3213         return 0;
3214 out:
3215         return -EINVAL;
3216
3217 }
3218
3219 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
3220                                           struct genl_info *info)
3221 {
3222         struct mac80211_hwsim_data *data2;
3223         struct ieee80211_rx_status rx_status;
3224         const u8 *dst;
3225         int frame_data_len;
3226         void *frame_data;
3227         struct sk_buff *skb = NULL;
3228
3229         if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
3230             !info->attrs[HWSIM_ATTR_FRAME] ||
3231             !info->attrs[HWSIM_ATTR_RX_RATE] ||
3232             !info->attrs[HWSIM_ATTR_SIGNAL])
3233                 goto out;
3234
3235         dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
3236         frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3237         frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3238
3239         /* Allocate new skb here */
3240         skb = alloc_skb(frame_data_len, GFP_KERNEL);
3241         if (skb == NULL)
3242                 goto err;
3243
3244         if (frame_data_len > IEEE80211_MAX_DATA_LEN)
3245                 goto err;
3246
3247         /* Copy the data */
3248         skb_put_data(skb, frame_data, frame_data_len);
3249
3250         data2 = get_hwsim_data_ref_from_addr(dst);
3251         if (!data2)
3252                 goto out;
3253
3254         if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup)
3255                 goto out;
3256
3257         if (info->snd_portid != data2->wmediumd)
3258                 goto out;
3259
3260         /* check if radio is configured properly */
3261
3262         if (data2->idle || !data2->started)
3263                 goto out;
3264
3265         /* A frame is received from user space */
3266         memset(&rx_status, 0, sizeof(rx_status));
3267         if (info->attrs[HWSIM_ATTR_FREQ]) {
3268                 /* throw away off-channel packets, but allow both the temporary
3269                  * ("hw" scan/remain-on-channel) and regular channel, since the
3270                  * internal datapath also allows this
3271                  */
3272                 mutex_lock(&data2->mutex);
3273                 rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
3274
3275                 if (rx_status.freq != data2->channel->center_freq &&
3276                     (!data2->tmp_chan ||
3277                      rx_status.freq != data2->tmp_chan->center_freq)) {
3278                         mutex_unlock(&data2->mutex);
3279                         goto out;
3280                 }
3281                 mutex_unlock(&data2->mutex);
3282         } else {
3283                 rx_status.freq = data2->channel->center_freq;
3284         }
3285
3286         rx_status.band = data2->channel->band;
3287         rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
3288         rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
3289
3290         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
3291         data2->rx_pkts++;
3292         data2->rx_bytes += skb->len;
3293         ieee80211_rx_irqsafe(data2->hw, skb);
3294
3295         return 0;
3296 err:
3297         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3298 out:
3299         dev_kfree_skb(skb);
3300         return -EINVAL;
3301 }
3302
3303 static int hwsim_register_received_nl(struct sk_buff *skb_2,
3304                                       struct genl_info *info)
3305 {
3306         struct net *net = genl_info_net(info);
3307         struct mac80211_hwsim_data *data;
3308         int chans = 1;
3309
3310         spin_lock_bh(&hwsim_radio_lock);
3311         list_for_each_entry(data, &hwsim_radios, list)
3312                 chans = max(chans, data->channels);
3313         spin_unlock_bh(&hwsim_radio_lock);
3314
3315         /* In the future we should revise the userspace API and allow it
3316          * to set a flag that it does support multi-channel, then we can
3317          * let this pass conditionally on the flag.
3318          * For current userspace, prohibit it since it won't work right.
3319          */
3320         if (chans > 1)
3321                 return -EOPNOTSUPP;
3322
3323         if (hwsim_net_get_wmediumd(net))
3324                 return -EBUSY;
3325
3326         hwsim_register_wmediumd(net, info->snd_portid);
3327
3328         pr_debug("mac80211_hwsim: received a REGISTER, "
3329                "switching to wmediumd mode with pid %d\n", info->snd_portid);
3330
3331         return 0;
3332 }
3333
3334 /* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
3335 static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
3336 {
3337         int i;
3338
3339         for (i = 0; i < n_ciphers; i++) {
3340                 int j;
3341                 int found = 0;
3342
3343                 for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
3344                         if (ciphers[i] == hwsim_ciphers[j]) {
3345                                 found = 1;
3346                                 break;
3347                         }
3348                 }
3349
3350                 if (!found)
3351                         return false;
3352         }
3353
3354         return true;
3355 }
3356
3357 static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
3358 {
3359         struct hwsim_new_radio_params param = { 0 };
3360         const char *hwname = NULL;
3361         int ret;
3362
3363         param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
3364         param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
3365         param.channels = channels;
3366         param.destroy_on_close =
3367                 info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
3368
3369         if (info->attrs[HWSIM_ATTR_CHANNELS])
3370                 param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
3371
3372         if (param.channels < 1) {
3373                 GENL_SET_ERR_MSG(info, "must have at least one channel");
3374                 return -EINVAL;
3375         }
3376
3377         if (param.channels > CFG80211_MAX_NUM_DIFFERENT_CHANNELS) {
3378                 GENL_SET_ERR_MSG(info, "too many channels specified");
3379                 return -EINVAL;
3380         }
3381
3382         if (info->attrs[HWSIM_ATTR_NO_VIF])
3383                 param.no_vif = true;
3384
3385         if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
3386                 param.use_chanctx = true;
3387         else
3388                 param.use_chanctx = (param.channels > 1);
3389
3390         if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
3391                 param.reg_alpha2 =
3392                         nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
3393
3394         if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
3395                 u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
3396
3397                 if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
3398                         return -EINVAL;
3399
3400                 idx = array_index_nospec(idx,
3401                                          ARRAY_SIZE(hwsim_world_regdom_custom));
3402                 param.regd = hwsim_world_regdom_custom[idx];
3403         }
3404
3405         if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
3406                 if (!is_valid_ether_addr(
3407                                 nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
3408                         GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
3409                         NL_SET_BAD_ATTR(info->extack,
3410                                         info->attrs[HWSIM_ATTR_PERM_ADDR]);
3411                         return -EINVAL;
3412                 }
3413
3414                 param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
3415         }
3416
3417         if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
3418                 param.iftypes =
3419                         nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
3420
3421                 if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
3422                         NL_SET_ERR_MSG_ATTR(info->extack,
3423                                             info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
3424                                             "cannot support more iftypes than kernel");
3425                         return -EINVAL;
3426                 }
3427         } else {
3428                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3429         }
3430
3431         /* ensure both flag and iftype support is honored */
3432         if (param.p2p_device ||
3433             param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
3434                 param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
3435                 param.p2p_device = true;
3436         }
3437
3438         if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
3439                 u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3440
3441                 param.ciphers =
3442                         nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
3443
3444                 if (len % sizeof(u32)) {
3445                         NL_SET_ERR_MSG_ATTR(info->extack,
3446                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3447                                             "bad cipher list length");
3448                         return -EINVAL;
3449                 }
3450
3451                 param.n_ciphers = len / sizeof(u32);
3452
3453                 if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
3454                         NL_SET_ERR_MSG_ATTR(info->extack,
3455                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3456                                             "too many ciphers specified");
3457                         return -EINVAL;
3458                 }
3459
3460                 if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
3461                         NL_SET_ERR_MSG_ATTR(info->extack,
3462                                             info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
3463                                             "unsupported ciphers specified");
3464                         return -EINVAL;
3465                 }
3466         }
3467
3468         if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3469                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3470                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3471                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3472                 if (!hwname)
3473                         return -ENOMEM;
3474                 param.hwname = hwname;
3475         }
3476
3477         ret = mac80211_hwsim_new_radio(info, &param);
3478         kfree(hwname);
3479         return ret;
3480 }
3481
3482 static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
3483 {
3484         struct mac80211_hwsim_data *data;
3485         s64 idx = -1;
3486         const char *hwname = NULL;
3487
3488         if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
3489                 idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3490         } else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
3491                 hwname = kasprintf(GFP_KERNEL, "%.*s",
3492                                    nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
3493                                    (char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]));
3494                 if (!hwname)
3495                         return -ENOMEM;
3496         } else
3497                 return -EINVAL;
3498
3499         spin_lock_bh(&hwsim_radio_lock);
3500         list_for_each_entry(data, &hwsim_radios, list) {
3501                 if (idx >= 0) {
3502                         if (data->idx != idx)
3503                                 continue;
3504                 } else {
3505                         if (!hwname ||
3506                             strcmp(hwname, wiphy_name(data->hw->wiphy)))
3507                                 continue;
3508                 }
3509
3510                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3511                         continue;
3512
3513                 list_del(&data->list);
3514                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3515                                        hwsim_rht_params);
3516                 hwsim_radios_generation++;
3517                 spin_unlock_bh(&hwsim_radio_lock);
3518                 mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
3519                                          info);
3520                 kfree(hwname);
3521                 return 0;
3522         }
3523         spin_unlock_bh(&hwsim_radio_lock);
3524
3525         kfree(hwname);
3526         return -ENODEV;
3527 }
3528
3529 static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
3530 {
3531         struct mac80211_hwsim_data *data;
3532         struct sk_buff *skb;
3533         int idx, res = -ENODEV;
3534
3535         if (!info->attrs[HWSIM_ATTR_RADIO_ID])
3536                 return -EINVAL;
3537         idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
3538
3539         spin_lock_bh(&hwsim_radio_lock);
3540         list_for_each_entry(data, &hwsim_radios, list) {
3541                 if (data->idx != idx)
3542                         continue;
3543
3544                 if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
3545                         continue;
3546
3547                 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
3548                 if (!skb) {
3549                         res = -ENOMEM;
3550                         goto out_err;
3551                 }
3552
3553                 res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
3554                                                info->snd_seq, NULL, 0);
3555                 if (res < 0) {
3556                         nlmsg_free(skb);
3557                         goto out_err;
3558                 }
3559
3560                 res = genlmsg_reply(skb, info);
3561                 break;
3562         }
3563
3564 out_err:
3565         spin_unlock_bh(&hwsim_radio_lock);
3566
3567         return res;
3568 }
3569
3570 static int hwsim_dump_radio_nl(struct sk_buff *skb,
3571                                struct netlink_callback *cb)
3572 {
3573         int last_idx = cb->args[0] - 1;
3574         struct mac80211_hwsim_data *data = NULL;
3575         int res = 0;
3576         void *hdr;
3577
3578         spin_lock_bh(&hwsim_radio_lock);
3579         cb->seq = hwsim_radios_generation;
3580
3581         if (last_idx >= hwsim_radio_idx-1)
3582                 goto done;
3583
3584         list_for_each_entry(data, &hwsim_radios, list) {
3585                 if (data->idx <= last_idx)
3586                         continue;
3587
3588                 if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
3589                         continue;
3590
3591                 res = mac80211_hwsim_get_radio(skb, data,
3592                                                NETLINK_CB(cb->skb).portid,
3593                                                cb->nlh->nlmsg_seq, cb,
3594                                                NLM_F_MULTI);
3595                 if (res < 0)
3596                         break;
3597
3598                 last_idx = data->idx;
3599         }
3600
3601         cb->args[0] = last_idx + 1;
3602
3603         /* list changed, but no new element sent, set interrupted flag */
3604         if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
3605                 hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
3606                                   cb->nlh->nlmsg_seq, &hwsim_genl_family,
3607                                   NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
3608                 if (!hdr)
3609                         res = -EMSGSIZE;
3610                 genl_dump_check_consistent(cb, hdr);
3611                 genlmsg_end(skb, hdr);
3612         }
3613
3614 done:
3615         spin_unlock_bh(&hwsim_radio_lock);
3616         return res ?: skb->len;
3617 }
3618
3619 /* Generic Netlink operations array */
3620 static const struct genl_ops hwsim_ops[] = {
3621         {
3622                 .cmd = HWSIM_CMD_REGISTER,
3623                 .policy = hwsim_genl_policy,
3624                 .doit = hwsim_register_received_nl,
3625                 .flags = GENL_UNS_ADMIN_PERM,
3626         },
3627         {
3628                 .cmd = HWSIM_CMD_FRAME,
3629                 .policy = hwsim_genl_policy,
3630                 .doit = hwsim_cloned_frame_received_nl,
3631         },
3632         {
3633                 .cmd = HWSIM_CMD_TX_INFO_FRAME,
3634                 .policy = hwsim_genl_policy,
3635                 .doit = hwsim_tx_info_frame_received_nl,
3636         },
3637         {
3638                 .cmd = HWSIM_CMD_NEW_RADIO,
3639                 .policy = hwsim_genl_policy,
3640                 .doit = hwsim_new_radio_nl,
3641                 .flags = GENL_UNS_ADMIN_PERM,
3642         },
3643         {
3644                 .cmd = HWSIM_CMD_DEL_RADIO,
3645                 .policy = hwsim_genl_policy,
3646                 .doit = hwsim_del_radio_nl,
3647                 .flags = GENL_UNS_ADMIN_PERM,
3648         },
3649         {
3650                 .cmd = HWSIM_CMD_GET_RADIO,
3651                 .policy = hwsim_genl_policy,
3652                 .doit = hwsim_get_radio_nl,
3653                 .dumpit = hwsim_dump_radio_nl,
3654         },
3655 };
3656
3657 static struct genl_family hwsim_genl_family __ro_after_init = {
3658         .name = "MAC80211_HWSIM",
3659         .version = 1,
3660         .maxattr = HWSIM_ATTR_MAX,
3661         .netnsok = true,
3662         .module = THIS_MODULE,
3663         .ops = hwsim_ops,
3664         .n_ops = ARRAY_SIZE(hwsim_ops),
3665         .mcgrps = hwsim_mcgrps,
3666         .n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
3667 };
3668
3669 static void remove_user_radios(u32 portid)
3670 {
3671         struct mac80211_hwsim_data *entry, *tmp;
3672         LIST_HEAD(list);
3673
3674         spin_lock_bh(&hwsim_radio_lock);
3675         list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
3676                 if (entry->destroy_on_close && entry->portid == portid) {
3677                         list_move(&entry->list, &list);
3678                         rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
3679                                                hwsim_rht_params);
3680                         hwsim_radios_generation++;
3681                 }
3682         }
3683         spin_unlock_bh(&hwsim_radio_lock);
3684
3685         list_for_each_entry_safe(entry, tmp, &list, list) {
3686                 list_del(&entry->list);
3687                 mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
3688                                          NULL);
3689         }
3690 }
3691
3692 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
3693                                          unsigned long state,
3694                                          void *_notify)
3695 {
3696         struct netlink_notify *notify = _notify;
3697
3698         if (state != NETLINK_URELEASE)
3699                 return NOTIFY_DONE;
3700
3701         remove_user_radios(notify->portid);
3702
3703         if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
3704                 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
3705                        " socket, switching to perfect channel medium\n");
3706                 hwsim_register_wmediumd(notify->net, 0);
3707         }
3708         return NOTIFY_DONE;
3709
3710 }
3711
3712 static struct notifier_block hwsim_netlink_notifier = {
3713         .notifier_call = mac80211_hwsim_netlink_notify,
3714 };
3715
3716 static int __init hwsim_init_netlink(void)
3717 {
3718         int rc;
3719
3720         printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
3721
3722         rc = genl_register_family(&hwsim_genl_family);
3723         if (rc)
3724                 goto failure;
3725
3726         rc = netlink_register_notifier(&hwsim_netlink_notifier);
3727         if (rc) {
3728                 genl_unregister_family(&hwsim_genl_family);
3729                 goto failure;
3730         }
3731
3732         return 0;
3733
3734 failure:
3735         pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
3736         return -EINVAL;
3737 }
3738
3739 static __net_init int hwsim_init_net(struct net *net)
3740 {
3741         return hwsim_net_set_netgroup(net);
3742 }
3743
3744 static void __net_exit hwsim_exit_net(struct net *net)
3745 {
3746         struct mac80211_hwsim_data *data, *tmp;
3747         LIST_HEAD(list);
3748
3749         spin_lock_bh(&hwsim_radio_lock);
3750         list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
3751                 if (!net_eq(wiphy_net(data->hw->wiphy), net))
3752                         continue;
3753
3754                 /* Radios created in init_net are returned to init_net. */
3755                 if (data->netgroup == hwsim_net_get_netgroup(&init_net))
3756                         continue;
3757
3758                 list_move(&data->list, &list);
3759                 rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
3760                                        hwsim_rht_params);
3761                 hwsim_radios_generation++;
3762         }
3763         spin_unlock_bh(&hwsim_radio_lock);
3764
3765         list_for_each_entry_safe(data, tmp, &list, list) {
3766                 list_del(&data->list);
3767                 mac80211_hwsim_del_radio(data,
3768                                          wiphy_name(data->hw->wiphy),
3769                                          NULL);
3770         }
3771
3772         ida_simple_remove(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
3773 }
3774
3775 static struct pernet_operations hwsim_net_ops = {
3776         .init = hwsim_init_net,
3777         .exit = hwsim_exit_net,
3778         .id   = &hwsim_net_id,
3779         .size = sizeof(struct hwsim_net),
3780 };
3781
3782 static void hwsim_exit_netlink(void)
3783 {
3784         /* unregister the notifier */
3785         netlink_unregister_notifier(&hwsim_netlink_notifier);
3786         /* unregister the family */
3787         genl_unregister_family(&hwsim_genl_family);
3788 }
3789
3790 static int __init init_mac80211_hwsim(void)
3791 {
3792         int i, err;
3793
3794         if (radios < 0 || radios > 100)
3795                 return -EINVAL;
3796
3797         if (channels < 1)
3798                 return -EINVAL;
3799
3800         spin_lock_init(&hwsim_radio_lock);
3801
3802         err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
3803         if (err)
3804                 return err;
3805
3806         err = register_pernet_device(&hwsim_net_ops);
3807         if (err)
3808                 goto out_free_rht;
3809
3810         err = platform_driver_register(&mac80211_hwsim_driver);
3811         if (err)
3812                 goto out_unregister_pernet;
3813
3814         err = hwsim_init_netlink();
3815         if (err)
3816                 goto out_unregister_driver;
3817
3818         hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
3819         if (IS_ERR(hwsim_class)) {
3820                 err = PTR_ERR(hwsim_class);
3821                 goto out_exit_netlink;
3822         }
3823
3824         for (i = 0; i < radios; i++) {
3825                 struct hwsim_new_radio_params param = { 0 };
3826
3827                 param.channels = channels;
3828
3829                 switch (regtest) {
3830                 case HWSIM_REGTEST_DIFF_COUNTRY:
3831                         if (i < ARRAY_SIZE(hwsim_alpha2s))
3832                                 param.reg_alpha2 = hwsim_alpha2s[i];
3833                         break;
3834                 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
3835                         if (!i)
3836                                 param.reg_alpha2 = hwsim_alpha2s[0];
3837                         break;
3838                 case HWSIM_REGTEST_STRICT_ALL:
3839                         param.reg_strict = true;
3840                 case HWSIM_REGTEST_DRIVER_REG_ALL:
3841                         param.reg_alpha2 = hwsim_alpha2s[0];
3842                         break;
3843                 case HWSIM_REGTEST_WORLD_ROAM:
3844                         if (i == 0)
3845                                 param.regd = &hwsim_world_regdom_custom_01;
3846                         break;
3847                 case HWSIM_REGTEST_CUSTOM_WORLD:
3848                         param.regd = &hwsim_world_regdom_custom_01;
3849                         break;
3850                 case HWSIM_REGTEST_CUSTOM_WORLD_2:
3851                         if (i == 0)
3852                                 param.regd = &hwsim_world_regdom_custom_01;
3853                         else if (i == 1)
3854                                 param.regd = &hwsim_world_regdom_custom_02;
3855                         break;
3856                 case HWSIM_REGTEST_STRICT_FOLLOW:
3857                         if (i == 0) {
3858                                 param.reg_strict = true;
3859                                 param.reg_alpha2 = hwsim_alpha2s[0];
3860                         }
3861                         break;
3862                 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
3863                         if (i == 0) {
3864                                 param.reg_strict = true;
3865                                 param.reg_alpha2 = hwsim_alpha2s[0];
3866                         } else if (i == 1) {
3867                                 param.reg_alpha2 = hwsim_alpha2s[1];
3868                         }
3869                         break;
3870                 case HWSIM_REGTEST_ALL:
3871                         switch (i) {
3872                         case 0:
3873                                 param.regd = &hwsim_world_regdom_custom_01;
3874                                 break;
3875                         case 1:
3876                                 param.regd = &hwsim_world_regdom_custom_02;
3877                                 break;
3878                         case 2:
3879                                 param.reg_alpha2 = hwsim_alpha2s[0];
3880                                 break;
3881                         case 3:
3882                                 param.reg_alpha2 = hwsim_alpha2s[1];
3883                                 break;
3884                         case 4:
3885                                 param.reg_strict = true;
3886                                 param.reg_alpha2 = hwsim_alpha2s[2];
3887                                 break;
3888                         }
3889                         break;
3890                 default:
3891                         break;
3892                 }
3893
3894                 param.p2p_device = support_p2p_device;
3895                 param.use_chanctx = channels > 1;
3896                 param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
3897
3898                 err = mac80211_hwsim_new_radio(NULL, &param);
3899                 if (err < 0)
3900                         goto out_free_radios;
3901         }
3902
3903         hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
3904                                  hwsim_mon_setup);
3905         if (hwsim_mon == NULL) {
3906                 err = -ENOMEM;
3907                 goto out_free_radios;
3908         }
3909
3910         rtnl_lock();
3911         err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
3912         if (err < 0) {
3913                 rtnl_unlock();
3914                 goto out_free_radios;
3915         }
3916
3917         err = register_netdevice(hwsim_mon);
3918         if (err < 0) {
3919                 rtnl_unlock();
3920                 goto out_free_mon;
3921         }
3922         rtnl_unlock();
3923
3924         return 0;
3925
3926 out_free_mon:
3927         free_netdev(hwsim_mon);
3928 out_free_radios:
3929         mac80211_hwsim_free();
3930 out_exit_netlink:
3931         hwsim_exit_netlink();
3932 out_unregister_driver:
3933         platform_driver_unregister(&mac80211_hwsim_driver);
3934 out_unregister_pernet:
3935         unregister_pernet_device(&hwsim_net_ops);
3936 out_free_rht:
3937         rhashtable_destroy(&hwsim_radios_rht);
3938         return err;
3939 }
3940 module_init(init_mac80211_hwsim);
3941
3942 static void __exit exit_mac80211_hwsim(void)
3943 {
3944         pr_debug("mac80211_hwsim: unregister radios\n");
3945
3946         hwsim_exit_netlink();
3947
3948         mac80211_hwsim_free();
3949
3950         rhashtable_destroy(&hwsim_radios_rht);
3951         unregister_netdev(hwsim_mon);
3952         platform_driver_unregister(&mac80211_hwsim_driver);
3953         unregister_pernet_device(&hwsim_net_ops);
3954 }
3955 module_exit(exit_mac80211_hwsim);